If I ever get around to replacing the mish mash of furniture in my studio, I will probably get this pattern and have this table made for me with a couple of modifications:
http://www.keepsakequilting.com/productdetail/2220.htm
I would have the table made eight feet long instead of six and I would put one machine at each of two opposing corners. I would also cover the top with melamine and have my giant cutting mat set into the top so that the surface is flush with the melamine. Add some sliding bins in place of the shelves and this would be my dream setup. :)