Both Toro and Snapper make good units to if your needs. I have been telling people in your position to take a look at the new Toro 30" mower, which may cut your time down. Your best bet is to demo any units you like and see how they feel.
#3
lawn mower fanatic
Right now I mow around 10 lawns a week and I love my Exmark Metro 26!!!
If you're mowing 5 to 7 yards a week and looking to increase your number of yards then I would consider a commercial unit first . Save the cost of the residential and then turning around to buy commercial.