Where can I find a variety of wide styluses?

At this point, I have amassed a sizable collection (read: pile) of acoustic era 78s. I love playing them on my Victrola, but I'm interested in getting into digital restoration. I am planning on purchasing something in the Stanton 500 family as a cartridge. I've seen them recommended for vintage records due to the range of tracking forces and available needles. That said, how do I find all these specialty needles?! I've combed major internet retailers and audio companies, but all I can find is a generic 3 mil stylus for 78s. I was hoping to find some other sizes and shapes (3.7 mil, truncated eliptical, spherical etc) that are compatible with the Stanton 500 (or any modern cart really). Anyone know where I should be looking? Any advice would be greatly appreciated!

Try http://www.needles4jukeboxes.com --he has an alternate site for home needles, just follow the link--
Ron Rich

Restoration Sound has a good selection of Rek-O-Kut stylus tips of varying sizes.