Pre-owned which bag to buy, help!

I like the first two you posted. the camellia flap is actually similar to a mini in size... so since you already have a mini and looking for something closer to m/l, i'd say the first two. i don't like the e/w flaps' shape, just my opinion. the reissue camera bag is definitely more of a day/casual bag than a dinner bag to me...
 
Honestly the first one is GORGEOUS, but i wouldn't buy it due to the mention of the red mark on the front,
I don't like the second one, it reminds me of a replica, ewww
Third one - is really nice too, but if you have 2 dark ones already then i think you are right into looking into a lighter one this time
Last one i don't like at all, the sides pouch out too much, doesn't look very neat

Here are a few i think are really nice and great prices too:
http://www.riceandbeansvintage.com/catalog/item/6257997/7758643.htm

http://www.designer-vintage.com/Cha...gs/*&facet.brand=chanel&sort=displayDate+desc

http://shop.rewindvintage.co.uk/product/Chanel_Shearling_Bag_SM23CHBAG

xoxo