I don't have any problems maneuvering and cutting around my deck, garage, landscaping or shrubs using the left side of the deck. For a $360 difference that would be money well spent upgrading to the Pro-Turn. Now remember...my Gravely is NOT the base Pro-Turn. It is a step up into the Pro-Turn 100 XDZ(stands for Xtra-Durability ZTR) Commercial lineup. When I bought my 2012 mine was their "entry-level" Commercial ZTR. They came out with the regular Pro-Turn in 2013 as their "entry-level" Commercial series and is very similar, but has the 10 gauge deck(mine is 7 gauge), the FS series Kawa engine(mine has the FX....BTW, on Kawa engines FR=Residential, FS=Heavy Duty and FX=Commercial) the ZT-3200 trannies(mine has the ZT-3400). I believe they use the same frame because both state 78.6" length and 50" width(without chute). And the Pro-Turn has 13" front tires and 22" rear where mine has 23" rear. Mine has 9.5 gal. capacity gas tanks and the Pro-Turn has 6.0 gal. I can't tell you all the differences, but on the 48" the 100 XDZ is about 100 lbs heavier than the base Pro-Turn so there are several features that are a bit heavier-duty on the 100 XDZ to add that much weight. I measured my front tires and they are 5" from my 52" deck and the front of the tires 17" from the deck. I'm not certain I understand where you are going with that but the front fork design must be correct for each machine to ensure stability. Most likely the 7 12/2" vs 3 1/2" you noted between the Pro-Turn and HD is due to the Pro-Turn having much larger/heavier constructed fork shafts and this can add durability and maneuverability versus the HD model. As with anything...the more you pay for a model when you go up a series the better quality you get.[/QUOTE
Thank you for the feedback as it was most helpful. Where am I going with this? Hell if I know, but the front forks on the Pro-Turn look so much different than the HD, almost awkward to me because of the 7 1/2" gap between the casters and deck. The fact that you don't have problems with maneuvering around anything helps a lot in my decision, even though the gap between the casters and deck on the 48" is 2 1/2" more, so that can't make much of a difference. I'm going to the dealer Monday morning for the last time and hopefully make a decision. I'll also see how much more YOUR seat would cost, if possible, to replace the entry level Pro-Turn's seat. Either way, I'm thinking of the Pro-Turn more now than before, thanks to you and jonesandjones's comments. BTW, Gravely is modifying their decks by removing the chains and going to a dogbone style drag link starting with the Pro-Turn series for 2014. I was told that the dogbone style eliminates a wear point, unlike the chain, however, I tend to think the chain is proven and of a simpler design and easy to repair the worn part. Thanks again and I'll let you know what I decide.