Don't even think about running pc bulbs anymore than you already have. They are why the watt per gallon rule was started IMO. It's old technology, that runs inefficient and needs replaced more often and are more expensive to replace.
Ati,TEK,aquatic life,Catalina,current are good fixtures.( from best to still very good )
I recommend getting a fixture that does NOT come with bulbs unless they are ATI or Geisseman bulbs. No crap bulbs!!!