IMHO, get the Portabag.
I have both, and while the Slim does offer a bit more protection, the Portabag is perfectly fine, and I find I really appreciate that extra pocket space. I still use my Slims, but the Portabag is used most.
+1 all the way. I totally dug the original Slim Bag, but between the newer model and the Portabag, it's the Portabag all the way... plenty of protection, lightweight, lot's of pocket space, and designed so that the smaller sized Sadowsky body fits perfectly (there is a removable padding section for full size J bodies also).



