I loved my hug a bub, and I never had a problem putting it on quickly. We had friends over on the weekend who are having their first baby and they mentioned baby carriers. DH immediately started singing the praises of the hug a bub. He made me get it to demonstrate, so I had to put DS2 in it. I was amazed myself at how comfy it was even with a 15kg lump of a boy in it, .
I borrowed a bubzilla off a friend when DS2 was born to test it out, but I wasn't a fan.
I have seen quite a few Close carriers and they look pretty good, as does the ergo for bigger babies.