Lexus: Quality Aftermaket rotors for a Sienna?

I'm tired of constantly machining the OEM rotors and I have yet another one
that's warped. I think the OEM rotors on my '98 Sienna are junk (and
there's no metal left anyway) so I am looking for a quality aftermarket
substitute. Any suggestions? I'm looking at the Raybestos PG line at about
$50 each right now. Anything better I should consider?

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-WJB