I'm loving my ergo backpack and my slingyroo. The back pack is black so DH is happy to carry it, has heaps of room plus lots of nifty little pockets to stash stuff in. Hooks relatively easily onto an SSC as well, which is a bonus.

The slingyroo has plenty of space but the real attraction is having the extra long strap that connects to sling rings on one end - means I can wear it across my body over DS when he's in a wrap and because it's wide strap made from wrap fabric, it spreads over the shoulder and is really comfy. Important considerations for adventures without the pram to hang a bag on