BigMel...while BVG isn't my #1 choice for grading vintage cards, I would recommend you leave them as is. You've paid for the grading once, and BVG has a pretty nice looking holder and their reputation is pretty decent (all grading companies get slammed on these boards from time to time). I would not let what others say influence you...choose a grading company that YOU will be happy with.
Gen Patton had a saying..."never pay for the same real estate twice."
BTW: Welcome to the board!
Always looking for GAI,SGC,PSA vintage Hockey and Boxing.