I'm looking to do the same thing with my delta. Wood magazine had a
comparison of most aftermarket fences in May 2004. They charge $5 to
download the review, it actually made me rethink which fence I was
looking at. Here's the link if your interested:
http://woodstore.woodmall.com/taripfe.html

I think the VEGA was the winner for budget fence. I still sorta like
the HTC for the ease of changing fence faces and jigs as well as fine
adjustment.