Well I'm just now getting the Turf Tiger in some heavy grass. My neighbors lawn was already overgrown (6" and over in front) with wild onions sticking up amost a foot tall in places. He fertilizes very heavy and has a leach field in his sloping front lawn so it's one of my hardest lawns. My Lazer Z with 27 Kohler and 60" Ultracut will cut it after a week but when its thick I may have to spread the clipping in front. The Turf Tiger gave a very crisp cut, and spread the clippings out extremely well. I was pushing it very hard through the thick grass and yes even the 31 big block lost a few hundred rpm's at times but just lugged right through it with relative ease. This is the first real test for this Velocity deck and I will have to say I'm impressed. Not one clump and no missed grass. Considering what this lot looked like before I was really amazed that I didn't have to go back over anything. For really nasty lawns with overgrown conditions I'll have to say I've not seen anything any better. This deck will cut, move, and spread a tremendous amount of grass at near full speed. Was it as smooth as the Ultra Cut? Well on a normal lawn the Ultracut has a carpet smooth finish but it would have had trouble not clumping on parts of this lawn. So an a normal lawn the Ultra Cut may have been smoother but on an overgrown lawn the Scag big block with the Velocity deck was unbelievably effecient. Never hardly slowing down and I mean I pushed it. The clippings are larger than the Ultra Cut but not enough so that I felt I needed to go over it again. Of course this is just one lawn and it was dry, sunny, and 81 degrees today but I'm still very impressed. I was needing a mower for the heavy work and so far it's looking good but I won't know for sure until later on this Spring. The anti scalp rollers seem to roll excessively at 3" but maybe I can do some adjusting there. And yes I took it down to 3" with no clumping but it is hot and dry so well see when we get some moisture in the lawns.