Jim, like yourself I always used enamels, this would have been back in the 80s during my first flirtation with modelling as a kid.
When I returned to AC modelling last year, I returned with an AB, and having had bad experiences with a Humbrol AB and enamels in the 80s thought acrylics represented less of a risk to my investment.
Bearing in mind that I also spray indoors, and have 3 little kids to think about, I also thought they would be less of an issue from a fume perspective, which has proved to be true.
As far as I am concerned, they do everything that expect paint to do, without stinking the house out, and are rediculously easy to clean up after. They take a little extra effort when brush painting, as it is a good idea to use then in conjuction with an acrylic thinner like Tamiya's which contains a retarder. But then I AB practically every thing, so that is not really an issue.
By the way I use Gunze and Tamiya, as I have found these to nice excellent results, with a great range of colours.
Sorry to go on, but I hope it helps.
Karl