John deere 275 vs 285 disc mower

I'm new to the hay business and learning the old fashioned way by doing, screwing up, then doing again. Finally have enough ground to cut to justify (I think) upgrading from my sickle mower to a disc mower. I've come across two that appear to be in good shape, both john deere -one 275 & one 285. Both are three point. Want to see if one will fit my tractor better then another, have a 5083e john deere currently. Land is pretty flat, will be native grass mostly with a few acres of Bermuda, possibly some hay grazer on occasion. Any thoughts or advice would be greatly appreciated.



John deere 275 vs 285 disc mower