Lots of info to your questions through this link:

http://www.poolforum.com/pf2/showthread.php?t=6484

I'm partial to my Autopilot, especially from the aspect of having their resident expert as a member of this forum (Poolsean). You should be happy with your purchase as long as you stick to one of the major players (Autopilot, Aquarite, Goldline, etc) and you FULLY understand ALL the pros/cons of SWC systems. Spend a lot of time reading all the posts in the SWC forum.

A SWC will not elimnate the need for pool care, but it sure comes close. (as long as you follow CarlD's advice and stay ahead of your water)