Between KB and PM, its a mostly up to you. Here are the squads i use:
PM (7):
-Champ /w Powerfist
-2x Meltaguns
Total: 221
With these guys, Feel No Pain rules.
KB (8):
-Champ /w Powerfist
- P Icon
213
Furious Charge and Fearless make them excellent assault troops
You'd have to throw some things around to give them transports, but both are within you point limit.
PM (7):
-Champ /w Powerfist
-2x Meltaguns
Total: 221
With these guys, Feel No Pain rules.
KB (8):
-Champ /w Powerfist
- P Icon
213
Furious Charge and Fearless make them excellent assault troops
You'd have to throw some things around to give them transports, but both are within you point limit.