I grew up an Alpha in a Delta household.
Pros: The emotional atmosphere is always calm, certain, peaceful. There is a relaxedness about everything.
Cons: Emotional displays are discouraged. The occasional clashes over Ti vs Fi morality.
Kind of average all around, though there was a noticeable lack of energy.
Betas and Gammas dominate my neighborhood, I think, with Delta following and Alpha last. Most of the Alphas I know are either from my school days or online.