I currently have a 44" Toro Timecutter Z and I am looking for something a little better and commercial grade. I am thinking about a 48" or 52" gear or possibly hydro-drive walk-behind. I have only had a chance to try a Bob-Cat a few times. I am pretty familiar with Toros, but I am looking for the best bang-for-the-buck. I would like to spend no more than about $4500. I know most of you guys have different brands of walk-behinds, so what I am looking for is your opinion on which might be the best choice for me.