I bought one last year and damn do I enjoy it.
I used to have a very crap Logitech wheel from the early 2000's with two pedals, but the G27 is way better than that wheel and it blows keyboard and mouse out of the water IMO.
I think I wont ever play another racing/driving game without it.
Yes, it is very expensive, but for me it's +/- €200 well spent for sure.
If you can afford it, you should really consider buying one.
I have just a few minor issues with it. It won't go in 5th gear every time, sometimes I've got to wiggle it. The pedals get a bit weird after a while, probably a worn out spring or something (THIS WAS AFTER A LOT OF TIME/USE THOUGH!!!) and the wires are a bit short, it'd be nicer if they were longer.
Simulator games aren't very stressful for the wheel, but when I played Dirt, it felt pretty abusive. (Thou I am the sort of person who's really careful with my stuff!)
Another thing is that it's hard to optimize it for games like Mafia 2. You'll need to F about with third party programs that are pretty much always crap.
But those are really, really, really minor issues with it.
The wheel has probably seen over 300 game hours already with ETS, City Car Driving, Dirt, Asseto Corsa and probably a lot more games I forgot to mention.
You bought a great wheel OP!