Smaller range than a frag but much higher damage, can be airburst just the same with ranged weapons, does about half a Meltabomb's worth of damage to vehicles at a much lower cost (and can be placed much more easily), will stick to enemies (they can evade to get it off but on a Heavy class it's usually close enough to kill them). I prefer Frag personally but mostly for the larger explosion.
Yeah, I'm attracted to it for its versatility. Sometimes I need to help kill the Rhino near the base. I used to use Meltabombs but then I got more goodies to spend my LP on and 200LP for a bomb that doesn't even blow up a rhino is a waste IMO. The main reason why I want it is to help kill the shield users.
Tactical flexibility the Krak wins. Never underestimate how often you'll stumble over an APC sitting on about 10% health. And AV should be a team activity.
If the servo skull wasn't so damned good I'd probably take krak bundles on all my tac loadouts, except my melta goy
If teamwork is your thing, they're arguably the best grenades in the game. Idk of the top of my head, if CSM get bundles or not though. Probably not.
Fairly sure they do less than half a melta bomb, Laash. Otherwise Krak/Stikky bundles would still be better investments than a melta.
They actually are better investments. They do effectively half the damage of a meltabomb. So two LSM running around with 4 krak grenades is the same as a single FD.. only they get bolters, extra ammo, and can cap.