Tubes: Which is best?

I have a Mcintosh 2102 amplifier which is just now showing signs of needing some tube replacement, specifically the KT88's. According to Mcintosh, tube replacement does not have to be done as an all or nothing proposition, that their circuitry allows for replacing tubes on an individual basis. That said, I was debating on what tube brand I should use. Naturally, I first thought of using Mcintosh tubes but they are selling them for $100.00 ea. Gold Lion tubes are $100.00 for a matched pair. From the limited knowledge I have about tubes, I am under the impression that these Gold Lion tubes are the best outside of the really expensive Diamond tubes, which I can't afford. Was wondering what I should do; buy the more expensive Mac tubes or go with another brand. I understand that the Mac tubes and the Gold Lion tubes are made by the same company.