Ok so shopping around for a water fountain for my cats (someone recommended this to help them drink more). From what Ive seen there are 3 choices; plastic, ceramic, and stainless steel. I assume plastic is the worst because of bacteria? Kinda leaning towards ceramic at this point because (silly) it comes in black lol. Unless of course there is a real good reason why steel is better than ceramic? I wonder how easy they break with a 2 year old around?