I don't know. Of the two, I'd say a Halo B because it's proven itself. Personally, I'd take a Reloader B over both of them. It has everything stock that an upgraded Halo has, and none of the issues from past viewloader loaders (shells being thin, battery doors, ugliness - all of which I had no problems with my ZeggyII)
I think that opinions will be better formed in a year, after the Vlocity has been out for awhile.
Never argue with an idiot; they'll drag you down to their level and beat you with experience." ~ Anonymous