I've been looking through the different threads and trying to educate myself on b-bags. I've noticed there are quite a few different styles. I think I want a larger style (but not too big). I really like the black or of course the pink. What are my different options? Also, where is the best place to buy them? Who do you think would have the biggest selection? Do they ever go on sale? Or are they like LV and never go on sale? Thanks for any and all help you can give me!