Edit: I use the DFGT in rFactor, Race '07, GT Legends, F1 2011, Dirt 3 & RSRBR2012, and once you have the correct settings it works fine!
I own or have tried every major racing title on the PC....I currently own...
All of Simbin except GTR2 and WTCC2010.
F1 2010/2011
Dirt2/3
FVA
GSC
GRID
When I tried the Dirt2 demo with the DFGT, I thought nothing of it, but when I tried it with G27, I bought D2/D3, lol
Like many of you, I went from KB-gamepad-DFGT-G27{or higher}.....and once you land at the quality level of G27 or higher, there's no turning back, especially if we're talking G27 vs DFGT, cause in my neck of the woods, it's like $150 vs $350.....so for just $200 more, you get an outstanding pedal set, and they feel unbreakable, plus there's no lateral movement in the pedals{unlike the rattlerly DFGT}.
And unlike the DFGT, the G27 pedals are so well built, that I'd be surprised if anyone's pedal set is in anyway different, but it wouldn't surprise me if the DFGT sets have huge variances considering their cheap and nasty flimsy plastic construction and ridiculous spring.
A fart could push the DFGT brake pedal down, but the G27 brake is quite heavy and ALL G27 pedals are beautifully precise.
On DFGT both the brake and gas pedals load up, so it's very difficult to be precise, I beat my best DFGT time at Spa{driving F1 2007 mod for GTR EVO} in 4 laps, but it was all down to the superior gas pedal, as I hand't gotten used to the extra braking distance of the G27 and was constantly braking wayyyyyyyyyyyy too early, but still beat my time thanks to the precison of G27 gas pedal, say goodbye on/off DFGT switch.
It just seems to me, that there's a number of factors required to improve your times and your consistency in sim racing, and a HUGE factor is mastering the pedals, now how does one master a DFGT set of pedals with on/off gas and brake lock ups thx to the cheap and nasty brake pedal....?
That said, even in games like D2/3 where for me at least, it's more about fun, the G27 is still miles ahead, the pedals still feel heaps better, and I ended up buying D2/D3 cause my shoulders got sore after trying the D2 demo on G27, and my FFB isn't anywhere near maxed.....no such feeling from DFGT when I tried it.
As for the paddles, they're extremely good, they have a nice positive click and feel bulletproof as well.
G27 also has a leather wrapped wheel, but DFGT is all hard plastic....ha!!, they really made the DFGT a budget POS, hard plastic to hold whilst trying to drive for hrs at a time.
Another thing about G27 wheel/FFB, it that it's very smooth and precise no matter which car you drive and feels better the faster you go, in fact I used to dislike RACEON's US muscle cars with DFGT, but now that I'm about 2.5seconds a lap quicker at Laguna Seca, I've found them to be one of my fav vehicles.
I don't use the clutch, but hey it's there if you want it, but the paddles are so good, it's hard to care about 6 speed shifter.
As I've said before, if you deem yourself to be a competitive person,
start with a G27, but even if you're not, treat yourself to a G27 as it's IMO, one of the greatest devices ever made, it really is, I mean, I can't think of anything I can do to PC gaming that's better than a HQ wheel.