I have a Polaris 360, that I have had for 7 or 8 years.
I've probably replaced every part in it. I'm used to it and I like it. It does a great job of sweeping.

Be sure you follow the directions about sizing the length of the hose. Mine was too long the first few years I had it and would constantly tangle up and even tie it's self into knots.
When I wised up and got the length right, I haven't had that problem anymore.
The hose is a weak point. You'll have to replace a lot of it because it gets breaks in it. It isn't cheap either.