Getting ready to upgrade... Been looking at the 757 and the new z820a with the 60" deck... dealer suggested that he had a 07 54" 737 that I may be able to get a deal on. Anyone able to compare the 737 with the 757? I'm a little concerned that the 737 may be a little underpowered with the 23hp. Also was really wanting the 60" deck, anyone think I'll have a big issue with the 54" instead? As of now I'm only looking at deere because I've already got the credit there, and I really like my dealer. Not really interested in any other brands. Thanks!