Why don't you tell us how you really feel.
Played some rally last night and im really getting used to using a wheel. I'm working on the weekly right now and finished my last 2 races without a single crash!
What FFB settings are you using? DiRT Rally FFB settings are.. troubling at default.
With Thrustmaster wheels what i've found good is this, T300RS as basis so T150 you need to up stuff a little bit.. 500RS might even take down a notch.
Self Aligning Torque: 70% (Pretty much overall strength)
Wheel Friction: 0% (fake effect)
Tyre Friction: 70% (quite important effect)
Suspension: 50%
Tyre Slip: 0% (fake effect)
Collision: 0% (Personal Preference, fairly obvious what it does when you hit a tree)
Soft Lock: 40-100% (personal preference if you use soft lock)
Steering Center Force: 90% (again, personal preference)
Console versions also seem to have an effect called Engine. This is a completely fake effect so might aswell put it to 0% aswell.
Had a friend try these yesterday with his T150 and he said that the wheel feels completely different, feels much more alive.