new transmission question

[jdw]

Hey guys. Recently lost my garage and before I pull the trigger on renting a new space, I'm slowly acquiring a bunch of stuff. Currently I have a short box 1972 c10 with a zz4 355hp/405 lbs torgue mated to a th350c with a 3.08 rear end. Eventually, I'd like to bring the rear up to 3.73, but that's something else. The trans has to go, it's pretty tired and not worth it for me to rebuild. I've been looking at bowtie overdrives and want your opinion on which transmission you'd put in (keeping it under $1,800) and why. I've seen a lot of threads on this, just looking for an across the board recommendation. I like the ease of the 2004r, but how do the handle for light towing and payload? I'm willing to look at both the 700r4 and the 4l60/65e (which generation?). Or maybe I should just pick up a "rebuilt" th350/400 for $400 on craigslist... This is a driver.
Thanks.