RE: What's the best???
Have you had the person that gave you the Maya give you and your DW a lesson? There is absolutely nothing like having someone show you first hand how to use a sling! Their one major downside is their learning curve. I have a Maya and it really should be hands free. When worn correctly, there is really no way for a baby to slip out the bottom. Some people do have problems with the fabric slipping in the rings, but that hasn't happened to me yet, so it may depend on body type and ring position.
Beth, mom to older DD (8/01) and younger DD (10/06) and always missing Leah (4/22 - 5/1/05)