I ski Breck lots, so I should probably post, although my Breck experience is idiosyncratic.
This season - If you're looking at any of the "terrain," expect to hit rocks. A lot more than usual at this time of year. I can't think of any "terrain" options that don't involve either "back of the hand" knowledge or dumb luck to avoid rocks.
I haven't been out since Saturday, so.
E Chair
The entrances to all the E Chair bump runs are hairy, although to be fair, that's almost always the case. The bump runs themselves are well covered, except for Tom's Baby. You can see that for yourself from the lift. Windows has been skiing surprisingly well, but if you don't know the high and low runouts, you want someone to guide you. Hint: If you're in the creek, you've gone too far.
Lower Peak 8
For bumps, High A(nxiety) has been great. Crescendo, too, for less intense bumps.
Upper Peak 8
I've seen people skiing Lake Chutes, so if hike-to is your thing ... it looks like the easier runs have crappy snow, while the harder runs have great snow, but massive cornices.
Whale's Tail has been skiing great. From there you *will* have to pick your way through a rock band regardless of the run you ski the rest of the way down. I've heard people talking about skiing CJ's, but I'm pretty sure this would still require carrying your skis or just sacrificing them entirely.
Imperial Bowl itself ... never my favorite, and right now it just looks like a rocky mess.
Horseshoe Bowl has some really great lines. Again, route finding through rocks is the challenge.
Chair 6
Avoid skiing directly below the lift line at all costs. It's literally the worst way to come down. Go wide to either side. This is true every season. You may see people building speed to traverse across, uphill, and into the trees. There's a reason they're doing that. B50 (the trees along the edge of Horseshoe Bowl) is my happy place. Contest Bowl has been skiing great (again, watch for rocks).
Shoot, I'm late for work. Basically "watch for rocks" ;-)