Dahlquist DQ10 Woofer Repair?

I need people's opinions on whether I should have my surround replaced (or attempt to do so myself) or spend a little extra and replace it with an after market woofer. Places like MCM Electronics sell woofers from the $20s to $60s so it may be just as cost effective to replace it.
My question then would become what specs other than size would I need to know before I could buy the new woofer?