I paid $450 for a used pair of M60ti's about 3-4 years ago. I'd rate mine 6-7. I also just got a new VP160 and they sound amazing together. If you can get them for $400 or so, I'd say it's a no-brainer.

I started out with nothing & I've still got most of it left
M60 VP160 QS8 EP350
M22 VP100
Algonquins