I like oxides and never met a pigment I didn't like, but I confess to being a bit partial to the oxides. The colors are more natural, the oxides are very concentrated, and nobody ever objects to them. Plus they're non-bleeding.
Mica is great as well, but do test. They can morph or fade in CP/HP, depending on the mica. Any good site will tell you which ones are stable at high pH.
FD&C colors can be a lot of fun as well, although many bleed--which can be used to your advantage in a design. Bleeding certainly isn't an issue in single-color designs. Some do morph, which can also be to your advantage. Blue #1 is a bright blue in MP (and on your hands), but morphs to a very nice purple in CP.
