What is a good sounding classic tube amps to hunt?

Recently I acquired classic speakers like JBL and Jensen. I am so happy with alnico sound, with their huge 15 inch woofers, throwing wide and deep soundstage.

I want to mate it with a classic tube amp. What are some classic tube amps to hunt down on used market?

Which one sounds better?

Sansui
Sherwood
Marantz
Quad
McIntosh (which no?)
Rogue audio

I am looking for under $500 on ebay.

Thanks kindly...

T