Odds of a set vs. two pair

[bakersh]

What has better odds: ending up with a set after starting off with a pair, or ending up with two pair after starting with two random cards? (running hot and cold, all-in situation preflop)

Real world example: you're all-in on the big blind and only the small blind calls and turns over pocket aces. You haven't looked at your cards yet. What do you want to see? I assume suited connectors would be the first choice (aside from the other two aces), but what's second (after connecting and suited cards)? A pocket pair (besides aces) or two unsuited, unconnecting cards?