Moby wrap every time. Big long bit of stretchy material. A synch to put on after the first couple of goes with the instructions. Very comfortable. Washable. Baby loved it. DH loved wearing it too. Much more comfortable than my Baby Bjorn.
Friend who had C section also had a Moby and loved it.
PS - friend who had the C section didn't buy a pushchair until her DS was 6 months old, and only used the Moby for the first 6 months, and says she'd do the same again next time. She was definitely using it a few days after giving birth (obviously not walking for miles and miles, but still using it).
I second the Moby - took me a couple of tries to get the tie right but after that it was a lifesaver. Cosy and snuggly, my DS loved it and used to sleep for hours while I had the use of both hands at once
My tip would be to tie it on much tighter than you think as it does stretch after the baby's been in for a while.
Lots of the mums on my antenatal thread who had sections also loved the Moby.
I used a Close carrier, similar to the moby I think in terms of stretchy fabric but it has rings to tighten it with so that you don't need to tie it. Not used a Moby but both I and DH loved it, I had a c-section too, was definitely using it a significant amount after 2 weeks, to begin with just DH used it mostly but he was small and I tied him high up enough that he didn't kick my stomach, so it was fine.
the bigger they get, the more of that fabric they use, remember. i have a kari-me, much like the moby i think. i'd HUGELY recommend it, but it can be a bit warm in this heat. i think the calin bleu do a lightweight one, but it's less stretchy.
i had a cs with dd2, i really had no pain at all with it. i was on paracetamol from day two, and tbh only took them to keep the nurses happy. went home with dd in the sling just fine. it's a big op, but i felt completely sorted after a week. the scar itself was numb for ages, but no pain. good luck!
We had a Moby and loved it. However, we had a winter baby. If your baby is due soon then it might be a bit warm in a stretchy wrap. A mei tai carrier (we have a Babyhawk) might be a good idea in this heat. There's only one layer of fabric over the baby, but still very supportive. The only drawback (I think) is that you can't do a cradle hold, only upright. My DS hated lying in the cradle hold anyway so this wouldn't have been an issue for us but yours may be different!
Don't worry about all the fabric, honestly, a shoelace would look long if you took it out of your shoe as well and most people have no trouble with them
The stretchy slings are great with a newborn because you can have them very high up. I used to make sure DS' bum was above my tummy button and his head was within kissing reach, so he really was high up. The secret is to tie it on about as tight as you would wear clothing, and then slip the baby in so that they are really tight and secure.