I am purchasing an Aquabot pool cleaner and would like to know if any other owners have advice as to which to purchase. I have a 20x40, rectangular, gunite pool with two sets of wedding cake corner stairs and a bench across the shallow end, no ladder. I'm not concerned with cleaning time or having a remote control as the 'classic' model I owned previously worked fine. I've checked online and see several models that appear to meet my needs, just not sure which one to go with. The classic again - with brushes - or the 'T-Jet' that is brushless? Or something else entirely? Thoughts?