I am considering purchasing a 72" AOS series with the 35 hp Cat diesel and was wondering if I could get some feedback from anyone that has a Bad Boy diesel mower. I currently have two Lazer Z XS mowers with the 35 hp Briggs Big Block engine and a 60" Lazer Z so this will be my first purchase of anything other than Exmark. My main questions on the Cat diesel are how many gallons of fuel per hour roughly does it use(my 2 big blocks avg. about 1.8gph) and how long have these particular Cat diesels been run in mowers(reliability). My big blocks are real strong so how would the 35 hp Cat compare to them. I was assuming being diesel that it would have more torque but would there much of a noticable difference in power overall. My last question is what would should I expect pricewise for a 72" cut with the 35 hp Cat diesel engine. Any other feedback I could get on Bad Boy Diesel mowers would be greatly appreciated.