I have a doppelbock on the docket in another week or two, so I may have to do a side-by-side. I tasted a bunch of doppelbocks over the course of a few days a couple of years back, and Celebrator was by far my favorite. The one doppel I wanted, but couldn't get my hands on at that time, was Salvator. I'll have to try to get my hands on one.
Celebrator has long been one of my all-time favorite beers, so even though it's a bit roasty for the style, I think my palate is just calibrated towards that beer. It is full-bodied for a doppelbock, but if I'm drinking a doppel, then I'm not looking to put down several liters of it. Another great one, IMO, is Tröegs' Troegenator.
And to the original post, I've never noticed a chill haze issue in German imports. I'll have to keep my eye out for it.