I've been to Silverton twice now and it's one of my favorite places. No nonsense, just hardcore shredding outside of a one-horse town. If you're a park rat that doesn't really know how to ski, you shouldn't go here because you might actually get yourself killed.
The hike to the billboard is the gnarliest fucking hike I have EVER done. At one point your scaling this spine-ridge-thing on iced over rocks, holding on to a rope to keep yourself from falling down hundreds of feet. A week before my second trip there a woman died by falling off the ridge. Evidently she tumbled for about 1,000 feet.
It is NOTHING like MRG, and nothing like anything else in the country. Basically semi-lift accessed backcountry skiing. Chutes, drops, spines, steeps, trees, etc and DEEP ASS SNOW if you hit it right. If you're a strong skier check it out for sure. It's beyond worth it, and the people there are super, super nice.