I've used a home-made mt, kozy, fh, bh, napsack & beco and I prefer the Ergo to all of them. My dd is almost 3 & 32# now and it really is our exclusive carrier. I can't remember the last time I used any of my other mts that I haven't yet brought myself to sell.
The Ergo is quick, easy & comfortable. And I can stash a dipe & a couple of wipes in the little pocket and be good to go.
I never started using the Ergo until my dd was 2 & close to 30#... before that, my MTs were always my favorite carriers. But for longer carries now that she's heavier, for us, the Ergo can't be beat.
It is true that the carrier doesn't go as high up on her back as some mts, but I've not found that to be a problem, just something that we adjusted to pretty easily.
If you can try it on before you buy it, you totally should!
Sometimes you can get a used/second from this site: http://www.myfavoritebabycarrier.com/used.html
I think they restock about once a month & sell out pretty quickly. You can try emailing them to see when they'll be stocking again.