Side-by-side comparison based on expert reviews and community consensus.
Philips Sonicare DiamondClean 9900
Best Smart SonicarePhilips Sonicare DiamondClean Connected
Best Premium SonicarePrice
$300-$380
$100-$200
Summary
The flagship Sonicare with the most advanced sensor technology and app integration available. Built for people who want real-time brushing feedback and the absolute best Sonicare has to offer.
The top-tier Sonicare for people who want app connectivity, multiple brushing modes, and a travel case. Community users note it leaves teeth feeling cleaner than Oral-B alternatives.
Pros
- Most advanced pressure and motion sensors in the Sonicare lineup
- Deep app integration with real-time brushing guidance
- Premium build quality and design
- Multiple brushing modes for every oral care need
- 12 brushing settings for highly customizable cleaning
- Includes charging travel case for on-the-go use
- App connectivity tracks brushing habits and pressure
- Community users strongly prefer the clean feeling over Oral-B
Cons
- Very expensive at ~$380 retail
- Most people won't use the advanced smart features enough to justify the price
- Replacement brush heads remain costly
- Overkill for casual users
- Expensive at full retail price (~$100+ per brush)
- Known stem issue reported in community forums
- Replacement brush heads are among the priciest on the market
- Warranty issues if not using genuine Sonicare brush heads
Our take
At $380, this is a hard sell for most people — but if you're serious about your oral health and want the most data-rich brushing experience Sonicare makes, the 9900 is it.
If you're a Sonicare loyalist who wants the full package — app, travel case, premium feel — the DiamondClean Connected is worth the splurge, especially when caught on sale.
Buy
