I'm in the research phase of purchasing a ZTR mower. I'll be mowing 2.5 acres of flat ground. I'm not looking to set speed records but want the cut to look the best I can make it look. That said, I've looked at mowers that are in the mid 18,000's for RPM's and today I was looking @ the specs for the Kubota ZG227 with 27 HP/54 Inch and the tip speed is 17,100. Is this something to fret over? Will I be able to tell cutting just 2.5 acres? Please shed some light on this for me? I'd also like to ask about deck depth. I seen on some Scags it was 5.0 inches, Exmark 5.5 inches, and the Kubota 6.0 inches. Of what importance is the deck depth? Thanks for the help.