I haven't used these specific struts, but they appear similar to the Bilstein "HD" (now branded as B6, or something like that).
The internal springs on the 036 struts are tuned to a specific ride height - need to keep everything near factory specs for those to work correctly. (This means those H&R springs are less than ideal with stock 036 dampers.)
If you want firmer than stock, the Bilstein Sports (now B8) or KONI yellows are the next firmer option. If you want adjustable compression and/or rebound, you have to get full custom stuff ($$$$). Pity we can't get Öhlins to whip up some 036 dampers for us.
BTW, the FCP price might have been an error... now up to $89 each. Good deal, not fantastic.