Found some old domains but unsure which to use or maybe both?

Well i didnt even realized i owned these domains till i got a renewal notice.

http://www.clubcrx.com and http://www.crxforum.com

This was my very first car so i have a attachment to it even though the car is out of production and interested is dying off.

ClubCRX is great for brandability but crxforum would be great for ranking since crx forum is the user i want.

Any ideas of how to use both of these domains to get the most benefit.

Im thinking of making a splash static intro page for clubcrx and than developing crxforum.com and linking it from clubcrx. AS far as brand and logo i would use clubcrx.