Nettie, Suse is the expert. I read everything she writes. Has always been tops for choosing for me.
I have 3
A baby bjorn - DH prefers this as it's easy on and off, and easy to get bub in and out. We however are both fit and strong in the back (our jobs requires us to wear a bunch of heavy equipment on a belt) so neither of us find it uncomfortable BUT I know lots do. We also haven't had really heavy babies either.
A pouch - I love this and so did Nate (thank goodness). I thought I wouldn't get much use of it once he outgrew being cradled in it, but I was so wrong. I love to have it with me all the time. Even now he can sit on my hip and I still have 2 hands free (great when you have a naughty naughty toddler like I do). I can also carry Darcy in it if need be. Drawback is, it only fits me. I would need to make DH his own. I find it really comfy too and fair dinkum it's so quick and easy to get on and off.
A meitei - I saved a thread of Suse's from a while back where she made her own. I made one off the same pattern and man I wish I had had it for Darcy. My snuggly little man just loves it, and it quite happy in it for hours. It's a bit more fiddly to tie, but once you get the hang it's all good. It also carries either of my children (7kg five monther or 15kg 3year old) and both of us can and do wear it.

Like I said I made the meitei and the pouch as well. I get the most fantastic comments when I am wearing either of those. Both dead easy.