Hi Paul,
You'd find the VP180's tonal match to be quite close overall to the M60v2 and perhaps subtly smoother on some vocals and brasses.
The tonal match to the M80 v2 or ti (Fall of 2003) will be excellent. If you have an M80ti made prior to Fall of 2003, you'll really notice that vocals, brasses, saxes and horns are considerably smoother on the VP180. The overall tonal match will still be consistent to the very old "ti". The Fall of 2003 "ti" was the time of the first major crossover adjustment that later became the "M80 v2" in 2005.
Regards,
Alan
