Betas are the cosmic douchebags, and Deltas are Disney.
Well maybe not douchebags, but I never get along with them and it takes tremendous effort not to chalk them up as that. They're often rather "physical" and forceful, and try to dominate you intellectually (Beta STs anyway), and tend divide people into clear-cut categories like "Oh ESFJs are a waste to our society lulz INTJ intellect forevar." Yes, most INTJs are actually LSI (ISTj).
Deltas are realistic and practical like Gammas, but not as hard-hitting and tend to be more easy-going. "Hey you guys, follow the rules!...or not. Actually do whatever you want, but be nice." a la Arbygil.