Robert1893: I guess I must be in the minority here. For me, the transition from the Nike Level 81 ball to the TM Level 81 was seamless. Plays the same for me
It depends on how close of attention you pay to the difference. I played the 81 TMs for a month. Same specs as the Nike I used to use. Nothing scientific, just a lot of AS and regular play-CC tournaments and WGT stuff. Not being a note-taker, it takes a while to get a feel for the ball.
I switched to the 40 Titleists a few days ago and in a nutshell, after just 1 sleeve, not only am I astounded at the difference, I got the Nikes back I used to play. The difference is primarily in the 3, 4 and 5 irons. They carry as I would expect them and react on landing like I'm used to. They appear to be a bit more forgiving on mishits as I got favorable results on a few hacks.
This little exercise pretty much confirms what I suspected-the TMs are downgraded Nikes and the Titleists are the new Nikes. A whole bunch more expensive, too. The new quandry is adjust or step up to the pump. :-(