Gravely ZT2548XL vs. Toro Titan ZX6000

[recon701]

My local dealer has the two zero turns for close to the same price. They both look a lot sturdier than any of the mowers sold at the big box stores. Does anyone have any experience with either and could recommend one over the other? I mow about 1.5 to two acres a week of very slightly sloped land. I have heard good things about Gravely before, but I do not know any one that owns one. I have a 54" tractor now, and I think the 48" deck on the Gravely would be enough, but most people don't regret going bigger. What do you think?