I'm a fairly impulsive buyer, and if I really feel strongly about an item, I will purchase it. Not the ideal answer, but honest :o)
I usually save for a bag, but then buy impulsively, if that makes sense. It always semms that I'm saving for a particular bag, then fall in love with something else and buy that instead (and usually before I've saved as much as I promised myself I would).
I think I am B but once in awhile I become an impulse shopper. That scares me when that happens because I'm not so financially set that I can just drop $1000-$2000 when I feel like it. I need to be careful.