I searched off and on for two years trying to find a ZTR mower that would satisfy my needs. A landscaping friend recommended that I should check out Walker mowers
http://www.walkermowers.com/index.htm1?section=mower I ended up getting the Model B with a 54" deck. It has no trouble mowing my 3:1 slope and trims within 1/4". Since the deck is front mounted the mower is very low to the ground and the deck is wide enough to get under bushes and my vinyl fence. Reducing the amount of trimming a great deal. The deck is all gear driven and the blades in a straight line across and makes nice stripes. The best thing about the design is you just pull two pins and lift the deck up to service or clean it out. I can mow my 3 Acre property in a little over an hour. I have an Echo string trimmer to touch up with that only takes about 15-20 minutes to go around the 600' of vinyl (80 posts) and 200' of t-post farm fence that the mower doesn't get.