New Neverful pm

I was looking at them which would be safer the ones that roll up or the one that is flat or are they all as good Thanks
I have one that roles up (murano glass with the blue, red, and gold swirl) that I swear by. It comes in a tiny little box for storage and is super easy to unroll and hang a bag on.
 
I think the PM size is sooo cute! If you don't carry a lot of stuff then you will be just fine. However, like lv in yyc said, the PM size isn't a true tote so if you aren't looking for a tote then PM will fit you surely.