I bought this one:
goingfast.de's ebay unitIt looks like its probably a ripoff of some of the ones on here. for $91, Im not going that fast or aggressive, and if it gies me a 10% improvement in stiffness and transfer, that will be more than enough to please me until the car rusts out. I love the car as is in terms of hiw it drives and rides.
Anyway, I just installed it today - very easy. It has a full circle at the strut mounts, so when you torque it down to 16 ft-lbs per bentley, the metal gives a little, but it is seems pretty sturdy, and can be removed easily at the strut mounts. I will determin e tomorrow on my on and offramps how much it helps.
It looks like this, as taken directly from the ebay sales page (not my car):

and the one I got looks exactly like this:

Ill try to post an image of it installed tomorrow.
For $91, its VERY light, seems quite sturdy, can easily be removed, and is polished, so it looks pretty good. Supposedly made in Germany too...
Hope this helps,
JMH