I have a friend who got a deal going with the local Matrix rep through the auto body classes he took, so i can get Matrix stuff a lot cheaper then anything else
and absolutely.. Urethane is the only way I want to go for a SS.
this car was painted with a Urethane SS.. if my car looks half this nice I'll be happy

(this is a car we did at the shop i used to work at) we did all the base work, then had a local paint shop do the final coat, as we didn't have a proper spray booth..