I originally had two of the gold letter subs that looked bad and worked good. Had them re-coned and in my opinion ruined them so I've been shopping ebay to find a matching pair. The other one not pictured is actually a c18a. So i'm still looking for another c18c. By the way no one has given any suggestions for midrange, mids,highs,etc...
As far as front stage, why not a nice 6.5 comp set? Not sure what you looking for as far as goals, strong midbass, detailed midrange, extended highs etc....its all going to depend on your listen preference.