Newtonian Mirror Cells

Hello

I am looking into a Newtonian project, and am wondering about mirror cells. The scope will be 8 inch in an aluminum tube. I have seen Parks, and University Optics. Is one better than the other. Are there some better than these. I would like to got high end here.

Also any sources for curved spider vanes, or is this a do it your self proposition.


Thanks
Randy

DAR for nice cells. http://www.oneilphoto.on.ca/dar.html

Kenneth Novak used to sell curved vanes. Don't know if he still does or of anyone else selling them. Novak can be reached by phone they say but I don't have a number. Maybe someone else will post it.
Bill