Quelhas I really don't have a preferrence since everyone has their perks and their disadvantages. But I do go a lot with the Redguards.
Sean-Bean Majoron Agreed! Bretons are my favourite. Probably because of their magic affinity and half-elven nature.
War Argonians or Redguards. Mostly Argonians. It actually used to be Imperials when I played Morrowind and Oblivion, but after playing so many other games where you play as the standard human, playing as a weird lizard seems fun.
Majoron War Ugh. Argonians bother me. Probably because most of the few interactions I've had with them involve them turning on me (Beem-Ja, for instance).
Wunis I'm not sure why, but I really like the Dunmer. Maybe it's because they mix stealth and magic so well, or maybe just because I like their aesthetic.