I'd love one of the new Pro series full frames, as there's heaps of parts of the sky that would suit the FOV with Esprit well, not to mention the even wider FOV from my Z61 and Canon lenses that are clinging to life in Chez Dunk
But as I mentioned in another thread, I can't justify that sort of outlay when I could achieve the results with a few mosaics with the 1600 mono, and I guesstimate in about the same time...