I run a small biz and have a 36H and 48 belt, both WBs. I hate belt wish i never bought it so i decided to buy another 48 at first. In the end I got another 36H. Things to consider: Is a foot more going to make a big difference? If you you mow large fields perhaps but if you have alot of large accounts you should have a 52< Ztr anyway. How is the mobility? I can get a 36" in more tight areas with greater mobility than a 48", and get through gates. Can i still manage large accounts? 2 36" is 72" of cutting vs just one 48". so yes I can still cut large account's with 2 mowers running at the same time. Cost efficient? A 36 is going to cost alot less than a 48. If you are like me and do primarily residential property that is under an acre on average I believe a 36 is much better route to go. Mobility, cost are the 2 main factors that make a 36 more desirable. If you have large accounts you should be running a 52 or higher Ztr anyway. some thing to consider when buying your next mower.