I bought a used 7 foot landpride finish mower awhile ago for $600 that needed tires, blades and belts.  After replacing all of those things, I pulled it with a 37 hp open station 4x4  tractor with R1 tires.  
Compared to what my 6 foot rotary cutter did, it was a huge improvement.  It was great for mowing my walking trails, and around my pond.  It was horrible around trees, or anywhere that I had to make a lot of turns.  It was slow and cumbersome.  My tires tore up the ground, and I just made a mess of things.  I only used it for a year before buying my 5 foot zero turn.  
The zero turn was faster, left a much better cut and it's great going around trees.   It's biggest drawback is how much it beats you up on rough terrain. 
Last year I bought a bigger 70 hp cabbed tractor and a 12 foot batwing.    In my opinion, I think that they 12 foot batwing gives me a better finish then the finish mower did when mowing my trails and around my pond.  I'm really amazed at how well it looks!!!!!!
My neighbor has a 15 foot batwing and it does a nice job, but the finish isn't anywhere as nice as my 12 foot batwing.   It could be that his blades are worn out, I don't know how old they are.  My blades are just a year old and still cutting nicely.  But it also could be that my mower has a 5 foot deck in the middle and 4 foot decks on the wings that contour to the ground a lot better then his much bigger decks do?   Or I'm just biased and I like mine better then his.  
 
Now I just use the zero turn around the house and my driveway.  The batwing does everything else.