Okay so first let me start by saying I was completely intrigued with this tooth brush. It just looks so futuristic which I love. even though i thought it looked cool I was still thinking "hey is this product going to work"? YES it does!! its covered in silicon so its extremely antibacterial which is perfect for the bathroom. second, the bristles. They again are silicon as well so they are durable (ISSA heads are flexible and can bend 90 degrees angles or more to reach hard places) and antibacterial. It also vibrates to help get debrie between teeth. Now to remember the mini was intended for children so unlike the $199 ISSA u can't control the vibration. I choose the mini because I don't feel theres any real difference other then size, and you only get one vibration setting which any more and it might feel weird in your mouth anyways. The mini is smaller, works just as good at the its $199 counterpart. if you are getting this for someone i would consider mouth size if your trying to save some money. I feel like my teeth and mouth are average so i don't see any issues withe small one, if you are buying it and have a large mouth then i would consider the bigger one.
SOME OTHER FEATURES OF MINI ISSA:
you can brush your teeth 365 before you need to charge it again (thats 6mons on one charge!!)
you only have to replace the brush head once a year
will blink if you don't brush your teeth twice a day (thats why its great for kids)
lastly the biggest thing i feel i had to get over was just the feeling, it was just completely different then what i was used to and it took me a good 9 days to get used to it. this doesn't replace flossing so as usual you still need to floss!
* I didn't give it 5 stars because i still feel its really expensive and that the price could definitely be lower but still a great product