Series 7100

They are the same the changes are purely cosmetic and 7100 doesn’t have a Bluetooth. I find 9000 completely useless as I don’t use Bluetooth nor pairing it with my smartphone. I find it ridiculous that it needs to know your location for whatever reason and you need this to be activated to use the app. Which imo is a violation of privacy

The 7100 advertises it does have gum mode (clean, white, gum health and sensitive). I am looking to replace my 18 year old diamond clean (model from a former dentist). I do use the gum mode. Does the 7100 not have it? Also, my old one is the 30 second 4 quadrant reminder. My one hesitation is the 7100 is advertised with 6 - 20 second brush sections/areas. Did you find it difficult to adapt to the 20 seconds? update: I did invest in the 7100 - it was on sale (both by Philips and Target) for $135 plus Philips gave an additional 15% discount/promo so I got it pretax for just under $115. It DOES have gum care. I am not used to the 20 second (x 6) timer notifications so I just move like I am used to and seem to wind up finishing where/when I am supposed to. The gum care part does have 4 more 20 second gum massage timers (which were only 15 seconds in my older one). So far I love it. I was using the A3 brush head on my old one and will continue to use it with this one (even though it came with 2 G3 brush heads - which makes the $115 price even better).

I actually went from an older 9000 to a newer 7100 I didn’t find there to be enough difference to warrant going with the 9000 again. I won that one from a fundraiser from a dentist but after 5-6 years the battery life made it awful to travel with Very happy with the 7100, believe the only real missing feature is “gum mode”, the other benefits of the 9000 series are mostly gimmicks IMO

I don't know if there's any good ones.  I guess there was a redesign in 2023? Which may explain why some people love it and others hate it depending on how recently they bought. The new ones seem to have a screw in the body that vibrates loose and makes the brushing action terrible.  The cheap ones/double packs you get at Costco and Sam's club were terrible out of the box for me. The mid-level ones like 3000-4000 series used to be a good sweet spot, but also  vibrated themselves apart for me. The expensive ones also seem to break, and now you're just out even more money.  I had to swap to Oral B despite using Sonicare for decades previously 

No need to spend that much for either one of them. I see a $80 one for oral b and $130 one for philips sonicare online. All you need is the pressure sensor. No need to pay more for the bluetooth function that’s worthless.

for EDS, the main things i'd focus on are a super soft bristle toothbrush (like the colgate extra soft or sensodyne pronamel soft), since a lot of us have gum sensitivity and fragile tissue that gets irritated easily. an electric toothbrush like an oral-B or sonicare on a sensitive setting can also be a game changer because you don't have to press as hard, which helps avoid bruising or micro-tears. for toothpaste, sensodyne is a pretty popular choice in this community because it's gentle and helps with sensitivity. biotene is another good one if you deal with dry mouth, which is pretty common with EDS and dysautonomia overlap. also worth mentioning since a lot of us deal with POTS or general dysautonomia alongside EDS, staying on top of electrolytes actually makes a real difference in how your whole body feels, including things like dry mouth and fatigue that can affect oral health. i've been using salties, which are just unflavored electrolyte drops, and they're easy to add to any drink without messing with your routine. but back to the actual dental stuff, definitely check with your dentist about fluoride treatments if you have enamel issues, and ask about a custom mouthguard if you're a jaw clencher since hypermobility can make TMJ stuff way worse.

My Sonicare with travel case (with integrated charger) is by far the best electric toothbrush I have ever used. Came here to say this.

Not bulky, no. And the built in charger is a blessing.