Transmission Advice needed

[83burban]

Well the 800 dollar rebuild for the 700r4 went out after about a year and half. Not too pissed becuase it lasted longer than I thought it would and it worked pretty well. So heres the dilemma:

I use my suburban to tow and haul people alot, it has a mild 350 in it now that will eventually be upgraded to a 383 or possibly bigger. So whatever trans I get will have to be beefed up accordingly. I have 3.42 gears with 31" tires.

I have done research and concluded the hughes performance is my best choice, going with one of their heavy dity towing kits with the converter and cooler, but I don't know which is best - I would love some real world experience here too.

Should I go with another 700r4 built for towing?
Or should I go with a 350 built for towing and add the gear vendors option?

Keep in mind that I know the gear vendors will cost more (with the unit and teh driveshat mods), but if you could pick one of the 2 which would it be. I'd really only like to have to deal with the trans once and am leaning towards the 350 simply beacuse I WILL be hopping up the motor eventually.

Thanks guys