I don't think you should stick with one company. Go with what works and what you can get a good deal on, or a mixture of the two.
I definatly like my SPOON rear tie bar -- even my lame OBX strut tower brace works well --. NExt im going with an ITR rear sway bar because it works well and the price is right (see, the mixture of the two? hehe).
I dunno... I wouldnt be brand-blind, I'd look for good items regardlesss of tehir name and price... and go with that.