The good: My cat loves this fountain! Before, I swore she only drank out of her water bowl every once in a blue. Mostly she'd get he drink of water when someone turned on the sink or bathtub. So this is a game changer! Now I KNOW for sure that she is properly hydrated!
I love that it has a plug, so I don't need to worry about batteries, It isn't loud, and it doesn't splash all over the place! It has everything you need to get started which is great!
The bad: It felt like it had a lot of parts to put together, didn't expect that at all. 
Any regrets? No! I and my cat love this fountain!