Which is cheapest and which is biggest? The Boond is cheapest at ₹799; the Megh has the biggest tank at 6 litres and the longest runtime at up to 100 hours.
Which has the most features? The Sukoon - it is the only one with a 7-colour LED, a remote and programmable timers, which is why it is the popular bedroom pick at ₹1799.
The comparison table
Here are the six figures that decide most purchases, straight from the SOSA store. Everything below is real - no aspirational coverage numbers, no rounded-up runtimes.
| Feature | Boond | Sukoon | Megh |
|---|---|---|---|
| Price | ₹799 | ₹1799 (was ₹2000) | ₹3499 (was ₹4000) |
| Tank | 300ml | 500ml | 6 litres |
| Runtime | Up to 6 hrs | 16-18 hrs (low) | Up to 100 hrs |
| Coverage | ~150 sq ft | 270-320 sq ft | ~215 sq ft |
| Light | Colour night light | 7-colour LED | None |
| Remote / timer | No | Remote + 2H/4H timers | No (mist dial) |
| Best for | Desk, bedside, hostel | Bedroom, study, nursery | Living room, dry AC, winter |
Three things they all share and I did not clutter the table with: every unit is cool-mist with no heating element, every unit has an auto shut-off when the tank runs dry, and every unit arrives with three water-based Hotel Collection fragrances so you can use it the first evening.
How to read the comparison
The numbers point to different jobs, not to a single winner. Coverage is the quirk worth noticing: the Sukoon actually covers more floor area (270-320 sq ft) than the Megh (~215 sq ft), because coverage is about mist spread while the Megh's advantage is tank size and runtime, not reach. So the Megh is not 'the biggest room' pick by area - it is the 'longest continuous humidity' pick.
Read it like this: choose the Boond if you want cheap, small and simple; the Sukoon if you want a light, a remote and timers for a bedroom; the Megh if you want a tank that runs for days to keep a room humidified through dry season. Price rises with capability, and each step is a real jump, not a cosmetic upgrade.
Myth: the most expensive diffuser is the best. Reality: the Megh costs the most but has no light and no remote - buy it for its tank, not its features. For a bedroom the mid-priced Sukoon is the better machine. Best means best-matched, not priciest.
Whichever column wins for you, the running rules are identical across all three: clean room-temperature water (filtered or RO in hard-water cities to avoid white dust) and only SOSA's water-based Hotel Collection fragrance. Raw essential and carrier oils are too thick and clog the ultrasonic misting plate - the one thing that voids the value of any of them.
The SOSA range
SOSA makes three cool-mist ultrasonic diffusers for different rooms, each arriving with three of our water-based Hotel Collection fragrances so you can scent from day one. Prices and headline specs below are live from the SOSA store. Whichever you choose, use only the SOSA water-based fragrance - raw essential or carrier oils can clog the misting plate.
| Diffuser / refill | Character | Best for | From |
|---|---|---|---|
| Boond (300ml mini) | USB · up to 6 hrs · colour night light · ~150 sq ft | Desk, bedside, hostel | ₹799 |
| Sukoon (500ml) | 16-18 hrs · 7-colour LED · remote + 2H/4H timers · 270-320 sq ft | Bedroom, study, nursery | ₹1799 |
| Megh (6L) | Up to 100 hrs · adjustable mist dial · ~35 dB · large-room humidifier | Living room, dry AC, winter | ₹3499 |
| Hotel Collection fragrance | Water-based refill · 7 hotel-inspired scents · 15/100/300ml | Refill for any SOSA diffuser | ₹299 |
Versailles
I trained as a perfumer at ISIPCA in Versailles, but half the questions we get are not about scent at all - they are about the machine. Indian rooms are bone-dry from AC and winter, and most gadget diffusers are too small, too loud, or quit by midnight. So we made three: Boond (300ml, desk), Sukoon (500ml, bedroom, with a remote and mood light) and Megh (6L, whole-room), each shipping with three of our fragrances.
They are cool-mist ultrasonic diffusers - an ultrasonic plate turns water into a fine, cool mist with no heating element, so there is no boiling water or burn risk, and each has an auto shut-off when the tank runs dry.
One thing I say on every listing and will say here: use only SOSA's water-based Hotel Collection fragrance. Raw essential oils, perfumes and carrier oils are thick or solvent-heavy and can clog the misting plate and damage the unit. A few drops of our water-based fragrance in the tank mists cleanly and scents the whole room.
Frequently asked questions
Facts verified June 2026: SOSA makes three cool-mist ultrasonic diffusers: Boond (300ml, USB, colour night light, up to 6 hrs, ~150 sq ft, ₹799), Sukoon (500ml, 7-colour LED, remote + 2H/4H timers, up to 16-18 hrs, 270-320 sq ft, BPA-free, ₹1799) and Megh (6L, adjustable mist dial, ~35 dB, up to 100 hrs, ₹3499). Each is cool mist (no heating element) with auto shut-off, ships with 3 water-based Hotel Collection fragrances (15ml ₹299 / 100ml ₹999 / 300ml ₹1799), and is made for Indian AC-dry and winter air. Use SOSA water-based fragrance only; raw essential or carrier oils can clog the ultrasonic misting plate. Composed in India; a portion of every order supports Nanhi Kali girl-child education. These are independent, hotel-inspired fragrance interpretations created by SOSA. SOSA is not affiliated with, endorsed by or associated with the hotels named; all hotel names are trademarks of their respective owners and are used only to describe the scent style.