I have been using enamel paints for 45 years now (yes, I'm REALLY that old!) and, in my opinion, nothing beats enamels for compatibility with plastics, or the durability; a good coat of enamel paint will definitely last longer than the model it's on. I will continue to use enamels for as long as possible (even though my wife constantly complains that "they really smell"!). And, just like Don, I use primarily Testors MM enamels (or acryls when I can't find the right color in enamel).
However, all that being said, a word of advice: It has come to my attention over the last few years that, for whatever reason, Testors has been slowly phasing out their MM line of enamels; I know of at least 10 colors (primarily in their American FS line) that have been "dropped" in the last couple of years, including one of my favorite "go-to" colors, Armor Sand (FS 30277). The good news is that all of those colors, and more, are still available as MM acrylics. I would strongly suggest, especially since you're just getting started in the hobby, that you at least attempt to use acrylics, otherwise your color options will be limited, especially in the future.
I am also of the opinion that the paint industry is somehow being pressured to get rid of enamels, since they are "environmentally hazardous", and acrylics are much more "environmentally friendly" in that respect. I can see a day in the not too distant future when I will be forced to switch to acrylics, just because of the dearth of colors available in enamels. I am slowly but surely trying to get used to the notion that I will be using only acrylics eventually. Plus, I won't have to listen to my wife tell me that my paint smells anymore! Also, clean-up is a lot easier, since you can use water, instead of petroleum-based solvents.
All in all, I would recommend you at least give acrylics a shot, since it would appear that that is where the industry is headed.
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