How old is your LO?
We LOVED the Moby Wrap early on... it's super snuggly & DS would just nap in there for hours when he was a newbie. It gave me back my sanity!
Now that he's older & more mobile (wanted to get out & move around more often) we mostly use a mei-tai wrap. It's quicker to get on & off when we're out & about.
Both are super-comfortable. I've done a 5k walk in each with no problems at all... and DS is a big guy!
I love the carriers & DS is totally happy in them. He is not generally happy in the stroller (and especially hates the car seat).
Baby carriers are very personal in terms of likes and dislikes. For me, the Moby gave me back ache, but I also had a big baby from birth. I love, love, love the Ergo, but I know some people don't like buckle style carriers. Your best bet is to find a local store that carries a variety of carriers or a babywearing group so you can try them on yourself before making a financial commitment.
If you can find a store or a babywearing group or someone with a bunch of carriers, that would be great! Unfortunately a lot of us don't have that option easily available!
My personal experience went something like this - Stretchy/moby type carrier and LOVED it until my LO are near 20 pounds and the stretch is just too much. I then switch primarily to a woven wrap. Wraps take a bit of a learning curve, but there is nothing like them once you get the hang of it. I also like a ring sling pretty much from the beginning for short trips and NIP (a bigger learning curve for me...). Then I have an ergo for my toddler. Love that it is easy to do lots of in and outs with, but I don't care for it as much with my little guy.
FWIW, my little guy is in a woven wrap nearly every time we get out of the car.