I had an Ergo in 2009 with DD #1 and used it through 2011.
I still have that Ergo and another one with DD#2 now.
It was recommended to me when I had an infantino carrier that dangled at the crotch in 2009. I would wear that thing for 15 minutes in the store and my shoulders would kill. Not to mention, hanging by the crotch is not a comfy or safe position for babe. The Ergo was recommended to me and it became my sole carrier! I did Disney for three days with a 23+ lb 6-month-old and felt fine. The last time I used it with DD2 she was 2.5 years and I was hiking with her in Colorado mountains. It worked fantastic! I've also seen it on a blog about parents who carry their much-older (8/9 I believe she was) special needs child while going on family hikes. Clearly it can be used to high weight limits.
My original organic carrier from 2009 is still in great shape. Literally the only sign of wear is that the label on the inside where the belt meets your waist has started coming off. That would hurt the resale value but I don't plan to resell because it is the one carrier I have which both kids have used. I anticipate my newer carrier will have great resale value in a couple of years when I may sell it.
My big and tall husband can use this carrier and so can I. Very adjustable. There is a convenient zipper pocket. The hood is great for sleeping and/or nursing. Oh, I can nurse and move around in it! I just adjust it so it's longer by pulling up on the buckle at the side (very easy) until she is at boob level, then latch. The hood provides coverage and support for this if you need it.
We don't find it all that cool but we live in Florida and have yet to find any way to make wearing cooler. We're just hot here.
I first purchased this when dd1 was 4-months-old and didn't know how it would work with a newborn. I tried it out with DD2 and never got a good fit when she was tiny. I tried with and without the infant insert. This could have been my error because I saw that other people used it fine with younger and smaller babies. I personally preferred using a wrap/ring sling/mei tei for the first few weeks. At or maybe before two months, the Ergo worked perfectly great for my little.
You are seeing these for less and less expensive these days and some in convenient locations.
Back carry with 19-month-old DD1 while hiking
Front carry with approx. 5-month-old DD1
DD2, 4-months, carried by daddy in newer black organic Ergo
Nursing DD2 in the Ergo. You can see how she is a bit lower and the hood is up. I think I only have one side of the hood up/clasped here. She is nursing on the side facing the camera. With a nursing top on, that's all that you can see!