I've been trying to get up the nerve to attempt my first mini painting, but I keep getting put back by all the "my primer reacted badly with the plastic!" horror stories.
I've had pretty solid experience with Tamiya Fine Surface Primer for Plastic & Metal, in white. Hasn't created any issues for any of my FlyingFrog plastic figs (LNOE & expansions, ATOE & expansions).
Thanks all for the positive comments. That's always appreciated... Personally, i'm using the Citadels Chaos Black primer. I never had any troubles with it.