I've had no experience with the TSX in 7mm. But out of my Browning 325WSM I shot them side by side with the Nosler Accubonds in 200 gr. Starting at a reduced load and working up, both shot similar except for POI. But as velocities increased approaching max loads the TSX groups started opening up while the Accubonds continued to get tighter. I decided on the accubonds to get the full potential out of my 325WSM.
On the other hand, in .308 cal, 180 gr, the TSX shoots just as well out of my 30-06 as the Sierra Game Kings I was using. I have some loaded to take as my back-up elk rifle.
I guess it all boils down to what your own particular rifle prefers. If you're just going to use your rifle for deer, there is no need for the TSX or any premium bullet for that matter. If the old standby Hornady Interlocks shoot well, they are all you need.