I run (I'm an 11, so your mileage isn't going to cover this, but here's my loadout):
- both burst turret upgrades
- barracks snipers
- sniper rhodians
- barracks stormies
= 67 of 69 capacity
But I have a very spread out base, using wall segments to try to stratify the incoming into things that ignore/fly over walls and things that don't'.
The things that fly over get to the turrets w/o their support.
then the things that don't get there later.
SMTTs are able to get through, but they're fucking overpowered and can get through most anything. Other than those, I typically get defense wins - I have over 4,000 defense wins currently.
I'm not preserving resources, you probably still are, so your layout isn't going to be like mine.
14 bursts, 4 sonics at the present.