I upgraded from a similar situation not long ago. I found that many garden tractors do come with tow hitches, and it's definitely a good move if you're doing a lot of towing. The one I switched to had a hitch, and it made a noticeable difference in handling the load without straining the machine. When you're looking at new tractors, definitely check the specs for towing capacity and transmission type — a hydrostatic transmission has been a game-changer for me, smooth and less hassle than the manual ones.
Also, engine size matters, but you don't always need the biggest one out there. It's more about the build and how the tractor distributes weight when towing. I learned that the hard way after a couple of 'overkill' purchases. And just a heads-up, if you're hunting for options,
wickham tractor usually lists detailed specs and towing capacities, which might help you compare your choices.