We used CSG to make 2 custom glass doors for a stereo cabinet. The price was very competitive and they simply took the measurements over the phone and they were completed the next day. No payment was taken until completion.
The sales and office staff were great to deal with and even when I realized I had made a mistake on the original dimensions, they recut and finished one side of each door at no charge.
The only issue we had was with their hours and the early close as it made it difficult to get to in time after work.