Peter Nelson , May 23, 2005; 12:51 p.m.
You didn't define "compatible".
The day before yesterday I shot a wedding with a D100 and a 20D, each with their own bracket-mounted Sunpak 383. I used the flashes both in automatic mode and manually - in manual mode I used everything from full to 1/16th power. I used them for straight-ahead fully-flash illuminated family posed shots, to outdoor fill lighting, to indoor shots backlit by floor-to-ceiling windows, to lighting up a dance hall by bouncing off a (high) ceiling. I took hundreds of shots and I don't think I got any seriously badly lit ones.
So if you don't need TTL flash metering then the Sunpak 383 is cheap, easy, and powerful.