Had a couple of games with it, the ones out of the box. Not bad. Chaos got done like a dinner in one mission :)
So I have
Dark angel marines
Note, the chaos chosen and pretty badly painted, but I just would not field these guys. Way too expensive. I might use some of them as champions at some point, at which time they will get a repaint to go with the individual squad they lead.
And old models painted to go with them...
and more dark angel marines
None of these an army make...