HELP PLEASE!! Looking for advice (pros & cons) on what mower in thread title would be best for my 5 acre tall fescue lawn. I have three trees (little trimming), lawn is very flat and fairly smooth with 10% of it having poor drainage (wet) making me concerned about making ruts. Obvious economical choice would be a $1900 72" RFM (Landpride or Woods) behind my Kubota L3400 with R-4 Industrial tires but I'm concerned about this heavy thing (& RFM casters) making ruts in the wet spots. From a lot of the great posts here, the fastest mower and best cut in wet stuff would be 757 w/ 7-Iron II but am also concerned about front casters making ruts (what do you think?). 757 60" is ~ $7500. JDX500 54" is ~$5400. What would you do? Thanks in advance! Cheers!