I just bought a tractor and researching which one to buy was probably the most frustrating purchasing research I've ever done. When it comes to tractors, everyone has their opinion. Some are objective and some are blinded by green and yellow. I ended up buying a Cub Cadet GT2542, but that sounds like more than you need and I wouldn't necessarily recommend any of the lighter duty Cubs.
A few things I did learn that may help:
-Stick with tractors/mowers that have Kawasaki or Kohler engines. Consumers seem to have mechanical problems with the recent Briggs & Stratton engines.
-Turn radius does not equal uncut grass radius. You could find tractor with a pretty tight turning radius and a 28" uncut grass radius.
-A 42" deck is better than a 44" deck simply because that is typically the line between 2 blades and 3 blades. Not that 3 blades are bad, but 3 blades = more belts to eventually replace and for 2 inches, it's probably not worth it.
-Horsepower has little to do with the tractor's performance power/torque. Not saying higher horsepower is bad, but I'd much rather have a 17 Horsepower Kawasaki engine John Deere (or similar) than a 26 horsepower piece of junk.
-Dollar for dollar, it's better to buy a well-maintained used, higher-end tractor than to spend that same amount of money on a new consumer-end tractor.
-The big box store tractors that are made by MTD
have been reported to have some quality issues. MTD makes several well-known brands... including Cub Cadet. But these quality issues more relate to the "consumer" line of products typically available at big box stores. So, some of these issues could be more associated with parts and engineering, rather than the workmanship itself.
-You'll get better overall service (including future service issues) by buying from a dealer, but you may pay a little more.
Also, IIRC, one of the consumer research websites I looked at rated the John Deere LA115 as a best buy. It is available at the big box stores and does little more than mow and tow a cart, but it sounds like it might be right up your alley... unless, of course, you're considering zero-turn tractors, which are the bomb for fast mowing times.