Iso, ooh u are talking abt the diaper bag! I was talking abt bags in general. If lightness is your concern, then I think only LSS fits the bill, no other brands are as light I think. Hmmm, maybe I am not too crazy abt LSS cause I feel that I just cant carry it off well, not sure why. I do have a regular LSS that I use as my dipaer bag now but I feel that it makes me look kinda frumpy, so I stuff it in the stroller! But I've seen a few moms who use LSS bags and manage to look good with them.