DFGT, GT3 RS V2 and G27. Overall I like the G27 the best with GT5. It's real neat that I can put a controller at the center of G27 wheel with a few rubber-bands.
Have played GT since the second one came out and with a controller until a month ago. Got a Fanatec GT3, shifter and pedals. Best money I've spent in a long long long time. Can't even bring myself to play with a controller now that I've adjusted to the wheel.
DFGT broke So DS3 till I get a new one. Might get a G37 but I heard Its not fully supported and I'm worried that will kill it's performance and it won't be worth the jaw dropping price tag.
For all the peeps that would never go back to a DS3...... Wait till your wheel breaks, and they break...