Is towing a concern? I will give you my opinion as I have had a few of the chargers you speak of. I think a stock charger is somewhat pointless for a built motor truck, but it is your truck and you should do whatever will make you most happy. The IHI gets a bad rap but I have gone back to it. I am not wanting all out performance anymore, just something that spools quick and drives/tows with good manners. And they are CHEAP. Chargers Ive had...
Garrett GT4088: Expensive, ball bearing, shitty oil feed setup, high drive pressure and EGTs, good fuel economy (4094 upgrade was better in all areas)
BW S366: Cheap, journal bearing, good drive pressures and EGTs, economy not as good. Ability to upgrade to billet wheels etc is nice.
I would call Trent he is incredibly knowledgeable and will help you meet YOUR needs (not what we all think you need
). He has some new BB chargers on his race truck which look interesting. I would also take a look at that BW 371.