Deathwatch Veterans / Decimus KT

What are you guy's opinions on the dw vets and there replacement the decimus kt? And how many of these battleline killteams do you us in your armys

For me personaly I'm gonna keep playing the vets as long as i can jut because of the extra thunder hammer that you can have in the unit.

Form my experiance they are an extremely scary close combat unit especially if you can fight before the oponent does.

But the Decimus KT is definitly a step down from the Vets.