Was never a fan on the Fiero , but its nice to see kits of cars from my kid years getting a reissue.
As for which one looks better, I think they both look fine for their respective reasons, I am not sure even if you forced me to choose I could.
I would use Tamiya's Pink Primer, its really nice and intended to be used for red paint, the benefit to using pink is using less paint to get the correct shade, since you'll be about half way there with pink primer.