I dont like the stock wheels either, HREs are definately an extremely high quality wheel. Personally from your choices Id go with a 847R, then the 845R.
The 3 piece design is nice but i think they look much cleaner with the hardware hidden like the 8 series wheels.
When we do wheels, we are either gonna go with the Fikse FM/10s like I have on my porsche or maybe the FM/5s. If we do FM/5s im thinking of doing a black center with the full polished lip, that should look really good on the black car =D