I own the old red Nike driver(lvl 100), the lvl 98 TM 8 degree, and the TM lvl 103 driver...
Used them all, and I still use the Nike 95% of the time because I can't do anything with it I want, I can because I'm used to it...
I use the lvl 98 TM 8 degree in high wind and Erin Hills...
I use the TM 103 occasionally because I own it, I don't see much more distance out of it, and I don't like the slow meter which is the main reason I stick with the other 2...
any of them will lower your scores, but if you own 1 already buying the TM 103 won't take a stroke off your score, only good irons and a good putter does that.