Cary 120s

I am looking at a few different used tube amps to "move up the food chain" from my dynaco st70.

I am interested in possibly a Cary rocket 88, but I am seeing several Cary 120s amps for very reasonable prices here on the 'gon.

For a nice amp with this kind of power there seems to be a large number of these offered constantly here.

Are people having issues with the 120s amps or am I just seeing a lot of people with "upgradeitus"?

Maybe I should also consider a used bat vk55 or vk60 instead.

Have any Cary 120s users had any problems with your amp?

Thanks Dave