Hi there.
First of all I'd like to say I never saw an accurate FF wheel yet. Always FF seems to be a LOT slower than in RL.
In RL the wheel helps you to correct a drift itself somehow, you just have to correct a bit and let the wheel slide through your hands.
PC Wheels FF (I use a Microsoft Sidewinder Forcefeedback and several Logitech Wheels, mostly my Driving Force Pro) will go in the correct direction, but to slow.
You can tune the force up very high and it is artifically hard to steer, but still it is slow compared to a real life car wheel.
Therefore you have to correct a drift yourself ... it just helps indicating it.
So, I don't like it. It just feels too artifical right now compared to real life.
If you just notice the limit by your force feedback, it is to late already to be fast.
Even in RL it isn't the fastest way to correct the car because you feel the instability.
It is much faster to correct the car BEFORE it gets instable and drifts. Every drift will cost time, every correction will cost time. Therefore you have to KNOW what the car will do and how fast you can go. Feeling the problem with FF doesn't help. Already lost time.
I think it helps to drive without FF, because you get more sensible for the car reactions without the help of feeling it through FF. You have to react quicker and avoid instability even more, because it is more difficult to tell.
I suppose this is why a lot of very fast driver don't use FF. They simply don't need it and trained themself more sensible without the help of it.
In a real car it is a different matter. You feel SO MUCH MORE in the wheel. Every bit of information.
So in future if FF gets much more complex with really fast engines it will propably be a great thing. At the moment I don't like it and I really don't think it makes you faster.
It may be fun for a lot of people though ...
EDIT: btw this is exactly why I think drivers of racing simulations can be great real racing drivers. They learned to react without all the feel for the car. If they can transfer that knowledge to a real car, they will drive more efficient than someone who just depends on the feeling or his bottom
If you know what the car will do and just correct small bits with your feeling, you will be really fast.