I have a non-swarm Imperial list. Looking for the best spend of 20 points in Round 2, no more than 20. I need the other 10 this round for other upgrades and a 4 point cushion for an expensive Round 3 add.

Choices that come to mind:

PS4 Epsilon Ace (17) + Stealth (3)

PS6 Youngster (15) + Squad Leader (2) + Stealth (3)

Youngster sharing SL could be nicer, especially in rounds 3 and 4, sharing that SL to others. Epsilon kinda loses value once he takes a hit.