Originally Posted by
slinky09
As Nick says, two different sets of rules - you can't for example upgrade with miles from econ. to Club on BA, but you can from econ. to Upper on VS.
If you see something you like at a price you approve of, you should always take it - the competition will differ.
I think your first point is a big plus for VS.
but as you pointed out there are times and routes where VS is cheaper and others where BA is. So judging the whole program on one Route is not really giving you the right picture.