What to watch out for w/ PCI-e cards?

[Buzz]

Are all/some/most PCI express cards created equal? Looking for add'l FW & USB ports on G5 2.3GHz DC, and have found some no-name cards that claim Mac compatibility for $40, and a bit less, which is a fair bit cheaper than brand name cards... is it worth a shot? any specific chipsets to look for/stay away from? are there any potential sleep, or other issues, w/ an otherwise working PCI-e card? or was that strictly G4 PCI stuff? goal is to avoid daisy chaining a bunch of hubs and devices all off of the mobo. thanks,
Buzz
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