450V or 500V for Express?

[azatplayer]

Layouts and schems and the BOM state 450V thru the PS for an express.
And the few pics i can make out of francesca have 450V markings on the top 20uf caps. These caps are now outrageously overpriced (someone at CDM must know we are here...)
Looking at a lot of other pics tho and seems 500v are the norm.
Hard to get 500V caps. But the 450V variants are plentiful.
What are folks using?

[selloutrr]

Physical size is the most important determining factor.
The caps have to fit when you put the bottom plate on.

Traditionally Mallory, though I've seen everything from F&T, ICR, Sprague, and Generic Nicholson used in clones.

If you aren't going for a traditional build go for a physically smaller capacitor with a higher voltage. i.e. F&T

Tubesandmore.com is a good source for small quantities of parts.

[Markusv]

http://www.justradios.com/orderform.html

Scroll halfway down - in the middle of the page

Use them all the time!

Markus V