I have 2 toons that I'm only now leveling trough the rep system so they don't have set gear or borg weapons.

They both fly the tactical escort retrofit and one is tac and the other science.

Their builds are from the exchange, mostly MK XI and MKII blue and purple gear being one disruptors and the other plasma.

I usually end 2nd or 1st on all STF's ran on the EliteSTF channel and 2nd or 3rd when playing with fleet mates.

I personally believe that the set's qualities are overrated and you can make some real good builds only with exchange stuff.