I have a 3pt rear discharge First choice finish mower. Have had it @ 5 1/2 months now, and it has been an amazingly sturdy mower. I use this mower in a part time mowing/landscaping/excavtion business. so it was important to have a mower that could be removed easily. And a MMM was not compatible with the backhoe mounts. A 3pt is also easier to get under for maintenence, although I've only sharpened the blades once and wash under it weekly. I do not use mulching blades if the grass is so high that the clippings show, I just go a little slower and it cuts still mulches them. Clumping is only a problem if the grass is to high and to wet. This is solved by going over it again after it has dried out. The First Choice has 4 360 degree rotating pneaumatic caster wheels that support its weight. along with an excellent floating hitch system it follows along, even over uneven terrain and allows for a very even cut. It may take a little while to get used to having the mower follow you, but it gets to be second nature after a short while. Plus you have the advantage of being able to back in under stuff such as trees and overhangs. It also does a fair job of breaking over the edge of ditches and banks, by backing up to them and pulling it forward up and over the edge.
I hope this helps.