Yup, and yours is the perfect decision for you. I too considered the MMM, but wasn't interested in turf tires to be able to replace my lawn tractor and not tear up the lawn. I wanted something that I knew was gonna pull when I wanted it to, which meant a bar lug tire and stay off the 'grass'. I was quite impressed with how little damage the R14's do to the lawn, though. Until I got silly and drove it on the yard after a prolonged soaking rain. Oops.It all comes down to your expected uses as you did an excellent job of explaining. To some, the increased turning radius may not be worth the added ground clearance and extra room for liquid ballast, but for others it may. Since I have the MMM, it made my decision an easy one as there was only one option.
Funny, but my little lawn tractor (22HP) has nearly as much HP as the LX(24.5 HP). I'm pretty sure it ain't gonna hold the LX a candle for pulling, though.