No way would a riding mower make sense for me. My lawn is semi-large but it's a lot of odd shapes and strips.
Here's my update, I bought a Ryobi 40V combo deal last year for like $400. Mower, weed eater, and 1 battery with lame slow charger. The mower quit at the end of the very first season and I didn't know if it was the 40V battery or mower so I just borrowed a mower for the last few mows. Home Depot wouldn't warranty the mower and said I had to call Ryobi. That was a PITA and they wouldn't let me return it, only repair the mower, but I wasn't even sure the problem was the mower. I bought another 40V battery at home Depot for like $200+ just to troubleshoot, and I figured I wanted a spare battery anyway. The mower still didn't work even with the new battery so I concluded the battery that came in my kit was fine. What ended up doing because I needed a mower this spring is I went back to HD like a sucker and bought a slightly nicer Ryobi mower that came with a fast charger for $300 and returned the other battery I bought. So basically for $100 more than a spare battery would have cost me I get a new mower and now I have 2 batteries, a fast charger, and get to keep the trimmer. So far as I can tell the 40v platform is ok, the cheap 40V mowers are about as junky as you would expect, but the new 40V mower seems decent ad long as it keeps working.