Funny, I never thought about TOS being more cerebral, although if you focus on Spock, perhaps it is. It seems to me that the main object of most episodes was for Kirk to hook up with the hot alien chick of the week--so "juicier" is an apt description. I agree that the characters on TOS are more appealing. I always liked Chekov and Scotty. TOS was funnier. TNG seemed to take itself more seriously.