I have looked at:
The OZ Alleggerita HLT, dreamy light 15.1 pounds, $1240 for a set in 8 x 17. At this price it is in the Anthricite color, a dark gray/charcoal color that I'd like to see in person. Also available in several bright colors but oddly not available in silver.
The BBS CO is $1000 for the set in 7.5 x 17 and weigh 19.5 pounds each, just making my weight goal and have that classy BBS CH look (and both lighter and less expensive than the CH in same size). Still wondering how these would look on my car.
Enkei RPF1, a great lightweight at 15.2 pounds and a stunning value at $932 for the set in 7.5 x 17. In Bright silver I like the color, but the twin six-spoke design is standard issue on thousands of Japanese cars and I can already hear nimrods asking me if they came off a Celica or some such BS..
Enkei GTC01, a nice looking 12 spoke wheel in hyper-black, 18.5 lbs in 8 x 17". I like it a lot, and at $876 for the set it is a top candidate.
If I go to 18" wheels NONE of the BBS wheels meet my weight goal or 20 lbs or less, so forget about it. OZ has a three wheels I am looking at;
The OZ Allegeritta HLT, at 17.4 pounds in 8 x 18 it is a dream, $1500 for a set, but the same restricted colors as the 17" version mentioned above.
The OZ Ultraleggera, a 12 spoke design in hyper silver seem like a good choice, $1392 for the set.
The OZ Crono HT, is a simple 5 spoke design in bright silver, $1156 for the set.
Team Dynamics Wheels, the Pro Race 1.2 look to be a good buy too, with the advantage of being available in several colors. The 17" wheel is about 18 lbs , but the 18" version is about 21 pounds, nixing it from my list.
And not to be forgotton is the Raderwerks LW-10. Available in black and bronze, but 7.5" not 8" width.
Plus a few more costly wheels in 18" diameter.