When I get my tax return I'm getting a Toro super recycler with the Kohler engine. Not cheap, but my last expensive mower was from a company that essentially went out of business (Troy-Bilt).
Then I had a couple of cheapies that die about 27 minutes out of warranty and the parts cost over 1/2 what I paid for the mower.
I have bad hip (inherited from my Dad's side) and need a self propelled mower, but there are two many narrow areas in my yard for a rider.
I figure Toro will be around for awhile and it has a 5 year warranty. Aluminum deck, washout port, Kohler OHV engine, 5 coupons for a free yearly blade sharpening. It'll cost less in the long run.