I'd stick with whatever works for you, but don't be afraid to experiment once in a while. I generally use cheap superglue ratehr than any brand-name as I think it has the same effect on metal and plastic.
For paint I use a varienty - for my Judges I use a Revell dark blue that I originally bought for French napoleonic shakos, Games Workshop's camo green that I bought for WW2 commandos and MP's sand yellow that I bought for Urban Mammoth's Junkers that I painted in a desert style...