I've decided to get a scag to mow my 12.5 acres. After buying the wife some jewelry, she said for me to pick the one I think will last the longest...yep...she's great! However, does anyone have any experience with the 31 HP Briggs-Daihatsu engines on the sabre tooth??? Should I go with the diesel or gas. If I go with the turf tiger, which engine do you recommend...there are 4 different ones listed. The land is 90% gentle slope. Whichever one I get will have the 61" deck...Advice?