we went with pentair equipment. different pool builders will push different equipment. from everything i read, there really isn't any big differences between hayward, pentair, and jandy.
we have a chlorine pool and maintenance is really easy. get yourself a test kit, download the pool math app, and add in the liquid chlorine/muriatic acid as the app tells you. brush the pool a couple of times a week, use the net to catch bugs/leaves/debris on the surface and you're good. we do not have trees near our pool so we don't have to deal with that.
we got a robotic (pentair kreepy krauly) and it does a really good job of cleaning. my one gripe is that we had bar stools built in, and it will get stuck there or get stuck above the main drain suctions. additionally, our pool builder built in the plumbing in case we ever want to go back to a regular cleaner.
cleaning the spa out is a pain in the ass though. you have to use that damn vacuum hose and it's not all that great.