How come you only use 21" mulch mowers? I thought the thinking was more lawns = bigger mowers. and do you actually mulch (I just started mulching a few lawns) or do you bag it and take it? leave it? I like the site btw, I'm struggling to get my own site up and running... been paying for it for three months now and it still aint up. In fact I would say your site has a very refreshing look to it.