Just wondering what these go for nowdays and if anyone has any opinions on them?

I've got the option to buy one for 150 pounds at the moment and was thinking of using it to replace my FenderFM210. Was wanting opions on if the upgrade was worth it ^^

I play all kinds of rock
Depends on what you have now. They are OK amps. Better than the MG series, but far from equal to their normal quartet of tube driven beasts.