I've got that Beast sds plus!
Things I don't like; you can't turn the hammer action off, you have to swap over to the supplied standard chuck which is supposed to shutoff the hammer action, but it doesn't seem to turn it off, you can still feel it hammering inside. And that's about it for negatives.
Otherwise, this beast is epic! Only had a few goes with it, but certainly seems to pack a punch!
She's a thirsty one too! I was chasing a channel into a 3" screed, she chomped through a 12.0 in fairly short order. However, I don't care because I've now bought the big 16 Amp charger!