According to the Cobra shaft chart the Phenom 60 and Prolaunch Blue are in the same realm.
I think the Diamana S+ or Kai'Li would be close enough that you wouldn't notice a huge difference...maybe a little lower launching than the White Tie.
Thanks bud - will have to keep an eye open for these around with 9xx tips on them. The other one I was thinking of is the Kusala White (like the one you have) or the Kusala Blue, but those would likely be more expensive, not less than the White Tie.
Still need to make sure Dustin is set on this trade though before I go buying more shafts for it.