Hitch mount recommendations

Hello,
I have a 2010 Audi A3 TDI Sport. Looking for recommendations of a good hitch mount for this model. Will any thing do, or are there better fits for this car than others?
Thanks,
Julie

Two types imo:

Curt/hidden/uhaul (all same manufacture or similar in design)

http://forums.tdiclub.com/showthread.php?t=378833&highlight=hitch

Westfailia/European setup (better setup imo, but cost a lot more)

http://forums.tdiclub.com/showthread.php?t=353091&highlight=hitch

Thanks!

How do you intend to use the hitch?

Trailer towing?
Bike hitch?

2nd the above.
I have a hidden hitch on mine. Bit of a pain to install as it required drilling holes in bumper support, trunk pan, and cutting of the bumper. I use it for a bike rack and love it. Did some very light towing with it in a move and worked well. Don't think I'd trust it with anything weighty, though.