With all due respect, your credibility is in question when you say that Luxilon strings have far superior tension stability than Tourna strings. That is an absolutely absurd statement. A rec player will get 3-4 hours great performance out of ALU tops before it dives off a cliff. This isn't a problem for pros who restring effectively every set. For a rec player, that's not really financially doable. To state that ALU has greater longevity than say BHB7 or BHBR is just not true. Are you sure you haven't switched your brands around?