Which are the best hip carry baby carriers?

My sister swears by her Tula. We are using ErgoBaby 360 which isn't bad also. I've read some reviews and they say that one of the biggest differences is that the shoulder straps of Ergo are wider apart so it works for us because it's my husband who mostly uses the carrier. If you have slim shoulders, I'd suggest the Tula! My niece loves it and always falls asleep in it when my sister is out.