Before you go and do that, I would recommend getting yourself an airbrush and trying some of the acrylic paints.
You can get a better finish with them, and if mixed correctly they go on pretty easy. I did some experimenting and the Tamiya Acrylics, when mixed with the X20 acrylic thinner, give a pretty good finish.
If you are stuck on the idea of rattle cans, I have had some success with the Krylon paint cans. You can get them from Ace, but obviously their color range is limited.
You can get airbrushes for a reasonable price off the net, but I simply chose the Tamiya one because it comes with a mini-compressor......I got it from TnU a few years back, and it cost pretty much the same as if I had got it off the net...
I am pretty crap at painting, but when you start getting the mixes right, and used to the brush...it works pretty well