I've used Auricaps, Solen and Illinois Capacitor. Frankly, they're pretty much the same, IMHO. Many of the folks I respect who restore these amps use Illinois Caps. They appear to be solid working caps and readily available.
Also, pay close attention to the resistor values. They will have drifted and they do need to be checked. After you've been pushing and pulling the boards, too, they can develop hairline cracks that will generate additional noise.
You'll like the results when you're done, though - a lot!
Cheers,
David