I like the smarty. I have one on my 06, but I plan to sell it and go with EFI live, which is not an option for trucks older than 06 for some reason.

I also just dropped 6k last fall on a new trans. even the 48re needs work to be reliable. I upgraded too though, so don't let the price scare you. I just wanted something that would hold up to slight power upgrades and be reliable. it's got a billet input shaft, billet triple disc converter, valve body, upgraded clutches, etc.