Looking forward to it.
I have yet to purchase a sprint booster. Many owners swear by them. crossfirefrank offered to let me drive his NA Crossfire w/the SB installed (@Woodward), but I didn't get the chance.
I do sometimes feel some throttle lag when I give it gas, especially from a stop. I've reset my throttle, etc., but when 2 miles of my 6 mile commute are limited to speeds of 20 mph - 35 mph, not sure how much it helps (plus I don't normally drive aggressively).
~ $300 (with S/H) is quite pricey for a little chip and wires, but if it is absolutely fantastic, I may be in.
Good luck w/the install.