Volk's strongest lightweight wheel is the RE30. It weighs marginally more than the CE28N (their lightest wheel) but is 30% stronger. If we are to order any wheel from Volk I'd highly recommend the RE30.
The typical 18x8 ET50 RE30 is 16.5 lbs, (stock class autox legal), they also have an 18x9 ET40, (great on the street and 17.5lbs), and there is a 17x9 ET54 (315/35R17 Hoosiers and ~15lb wheel makes a perfect ASP, CSP, SM2 combo).
Check out the colors available
here.
My favorite is flat black.

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'07 Mazda Rx8 Sport delivered 03/15/08 - it's B-Stock time!!
'06 Cool Z0K delivered 07/25/06 VIN 119811 -
deceased 02/29/2008
SSR GT2's SOLD to Randy at
DDM Works
Red Bull Drift Team 2008
Formerly Miles@Tirerack