I currently run the Gravely Pro-turn 160 in Northeast PA. The mower is primarily used on fescue lawns. I have about 8 hours on this new mower and I am thoroughly impressed thus far. I gave a review of the machine at the end of 2011. Here is a link in case anyone is interested. The review touches on a little bit of everything.
I got to use the mower for the first time in 2012 this past weekend prior to aerating. My review still stands. This machine is definitely a nice performer. I believe Gravely gives you a lot for your dollar when compared to other machines. The machine is comfortable to ride due to the standard suspension seat. The mower also allows easy access for maintenance. I will forward any additional thoughts I have as the season progresses.
For anyone who is interested, I should be posting a review of Gravely's striper kit once the lawns get going. I will provide some side by side comparisons so you can decide for yourself. I also plan to try out the new Gator G6 blades.