Given the choice of getting the blower again or doing the 5.0 swap, I'd definately choose the supercharger again. I love the power it gives and I get into WOT a lot (a have a really heavy foot). It's nice having a 4000+ lb truck that's as fast (acceleration) as my dad's SLK 230 Kompressor (in fact his car's blower is almost identical to mine).
All in all, the blower, all related upgrades, and labor cost about $4300-4500. I feel this was still cheaper than the swap, my truck is more reliable than a swapped 5.0 X, and even with the problems that I had, my truck was fully drivable 4 weeks after the project began (mostly drivable 4 days after it began).
Well again, I'm out of time (darn 24/7 job!), but if you need anything, don't hesitate to holler.
Good luck!