Well, here's my experience with the wheels i had now.
I started PC2 with the controller, which got me hooked in the first place. It was fun to drive, but for the experience, i wanted a wheel. I wasn't sure if i would stick to racing games for the longer term, so i bought this second handed T80 for €25,00. I used this wheel for about two weeks and it really pushed me over the edge in terms of racing games.. i wanted more!!
I really wasn't tired of the T80 yet, because even without the FFB (which you don't miss when you never had it..) it gives you the feeling that you are actually driving the car. Unfortunately, my T80 wheel had some issues (jerking to the left in-game, without me giving input). I had to put her down
Because of the T80, i got the hang of racing with a wheel and with that knowledge, i was more confident to spend a little bit more. I checked out some reviews and bought the T150RS Pro with the T3PA pedals (they are ALOT better than the T80 crap what they call pedals). For now, i am really very happy with the T150.
Maybe this helps you in the right direction (Y) If you can get your hands on a T80 for pocketchange, why not. You can always sell it for just as much and upgrade