depends on what you want it for denim doesn't have a strap so couldn't wear it as a bag but if you just want a clutch or something for inside a bag I'd go for the denim always go for the LE over a reg line you can get later
I vote for the damier azur mini pochette. I think it's more easy to use with or without a bag! and I love the chain!!! but I agree that the denim trousse rayé is a limited edition so if you really want it go for it now and for the mini pochette later.