My initial plans was for about an acre of yard to mow so I got a $2000 zero turn residential mower (Craftsman 52") which worked pretty good for the first year or so but it was a rough ride on my previously pasture lawn. I started with a Yanmar 45HP tractor with FEL and 6 foot bush hog to take care of all the non-lawn pasture and it worked great for the woods and brushy areas but it was hot in the summer heat to operate. So I then bought a cab tractor (LS P7010) with heat and AC, radio etc to bush hog with and a 7 foot bush hog, sold the Yanmar and bought a larger Ferris IS700 for the suspension system and it sure made mowing much smoother,faster and better than the old Craftsman.
I never considered trying to mow with any tractor mainly because the zero turns can mow much faster, better and closer to obstacles and I have over 100 trees in the now up-sized to 6 acre yard which takes me about 3-3.5 hours to mow.
I did also later buy the
B26 TLB mainly because there were many areas that I couldn't get the P 7010 into due to it's size. At the time, I figured I would get a small 4 foot rotary mower for it but with the Ferris, I can mow anything that I cant bush hog. The
B26 is used exclusively for FEL and backhoe work. In the 6 years I have had it, the hoe has never came off. With 11 acres of rocks (my Arkansas soil grows rocks very well)to maintain, the backhoe is used about as much as the mowers to remove the yearly crop of rocks that I usually find with the mower every spring.
In summary, I would suggest getting a commercial or near commercial grade of zero turn mower. That and a string trimmer is all you need to keep your lawn nice. One thing to note with a zero turn mower is that it WILL NOT handle area that are wet and slippery especially if they are sloped even slightly. I usually keep my phone with me when mowing our drainage ditches and pond banks so I can call the wife to bring the RTV and pull me out of the mud.
As for a TLB, they are sure handy to have especially if you cant or don't want to shovel dirt around, dig holes for planting landscape plants, dig trenches for sprinklers, additional water line for hydrants etc. Whether it is worth the $4000+ is a decision you will have to determine based on your needs and your health.
I wouldn't be without mine but your mileage may vary considerably.