Cross Cut gets groomed regularly; not exactly "often," but it happens. The runs do bump out, and there is a funky fall line in the bottom quarter of the mountain that sometimes gets a little weird. Since the runs face east, they get a lot of sun so be aware of what the weather was in previous days, because if it was sunny and then freezes, and doesn't warm up again, it can be pretty bad and there is no way out. They soften up early in spring, when sun is out, though. THe bottom melts out pretty early in warm weather, so they close Reso a couple weeks before the rest of the mountain.
I have found that skiing directly under the lift gives you the best snow and the most consistent bumps. Usually no one is on the lift ;-) so it isn't too exhibitionist-y. I've only seen one line there, ever, in my life. (Except for times the lift had stopped, but that doesn't count.)
It's a great place for storm skiing, since it's leeward of most storms, and when the wind is brutal on other parts of the mountain, you'll hardly notice it in Reso. Until you get to the very top of the lift, then you remember why you are there and not somewhere else, even if your legs are tired from the moguls, so you go back down.
Finally, one of my favorite runs ever was on a powder morning, I had first tracks from the top of Spaulding and skied all the way to the bottom of Reso without stopping. I was proud of that one, it's a long way.