sub for vandersteen signature 2ces

Has anyone found a good sub other than vandersteen models to go with signatures 2ces?
Rel Strata III if you can find one.
why would you do anything else but vandersteen? i don't want to come across harsh and dont' mean it that way, is it because of finances? the vandersteen set up is outstanding , i own the two ce sign. with sub and the set up is incrediable.......
2Wq: your only logical and best choice.
if you don't go with vandersteen, check out the new rel brittania line...though i would stick with vandy...