Automatic cat feeder/water

Does anyone use one of these? Does anyone have one that's large enough for 4 cats? Are they worth it? DOes the food stay fresh?

Here's what I'd love to find. An automatic feeder/water bowl that has multiple bowls maybe 2 for food and 2 for water? DOes that exist?

If not, which one would you recommend? PetMate? Some other brand? Thanks!

Are you looking for dry food and water?.... Are you wanting access all the time?

Yes, I"m looking for one that dispenses all the time (not one on a timer). Dry food and water. Thanks!!

I have used them and I cant say I like them... but for water they can be very nice ... I do use one for food when I leave the "kids" with a sitter

I believe some of the fountains have the ability to add more than one bowl/ drinking area ... Cannot say I have seen the same for auto feeder