Hmm.. tastes are pretty subjective. If a single variety has all these traits, I don't think we'd have the 20 varieties we do now.
Cold hardy- valdivia roja from Richard's chart
Fast grower - physical graffitti
Good taste - many, but I like G2, sugar dragon,...
Self pollinating - Vietnamese white and yellow dragon are maybe the only consistent ones
Most of us want to grow the best one too and if you ask me I'd say I don't have any bad varieties, just 15-20 nice ones and maybe half of them actually fruit because they are too crowded.