I have tried many different brands of waterers, but since I bought one of these, all the rest went in the shed. I have numerous separate pens, and one of these in each of them. Just lift off the top, fill it up, and walk away. Easy to disassemble if cleaning is required. I just place them on a 4" thick concrete paver, so keeping it level is not a problem. It is heavy enough that the chickens (or the wind) can't knock it over. It really is the most trouble free (and labor free) waterer I've ever owned.