a walkbehind will be 2-3x faster than your riding lawn tractor and a ZTR will be 2x as fast as the walkbehind. if your think you'll have the work, spend alot of time looking for a sweet deal on craigslist. there are alot of people dumping great mowers on there. as far as a brand, find a good dealer close by and try to get a brand they sell. a good dealer is more important than brand IMO. when it breaks down, you'll need it fixed quick
20 years total service, Full Time since 03'
Sig Sauer Sercurity