I've only ever used a Logitech DFGT & G27 on GT5&6 and a Logitech G29 and G-Pro (which I just got set up about a week ago) on GT7. I did get a short session years ago on a Thrustmaster T300 belt drive wheel on GT5. Not really in a position to say which one is best for GT7, but I'm liking the Pro upgrade so far. The Trueforce really changes the game. Really depends on your budget and how far you want to go with your "rig" setup and accessories. There are quite a few more wheel manufacturers now so, good luck in your hunt.
I've only ever used a Logitech DFGT & G27 on GT5&6 and a Logitech G29 and G-Pro (which I just got set up about a week ago) on GT7. I did get a short session years ago on a Thrustmaster T300 belt drive wheel on GT5. Not really in a position to say which one is best for GT7, but I'm liking the Pro upgrade so far. The Trueforce really changes the game. Really depends on your budget and how far you want to go with your "rig" setup and accessories. There are quite a few more wheel manufacturers now so, good luck in your hunt.