Kenben,
I have been printing on Vibrance Rag and have been very happy with it. I made my own profiles with a colormunky for my Epson 4900, and really like the results. I recently ran a 16 by 52 inch panorama on Vibrance Rag and got very good feedback.
I am about to experiment with Elegance Velvet, will post more once I have a chance to play with it, but I do like the feel and texture of this paper also.
Overall I am very happy with BC's products so far, and look forward to experiment with their Crystalline canvas as soon as they release it!
Stefano