Highest BUILD quality tube amps?


Not so much with sound...lots of ways to fine tune thru tube rolling, etc. I'm just curious which tube amps are built to last for many years with the least amount of repairs. I know Mcintosh comes to mind for longevity. I was snooping around on the web and Air Tight seems to be built like a tank and I've never read any poor repair histories. Luxman same thing. Any others come to mind?
aberyclark
I have an EAR Yoshino V20. I own a lot of other tube gear and none of it is built or sounds like this. Two thumbs up for Tim deParavicini. Seriously, give EAR a look. 

ray
I had very good long term service from my Quicksilvers, but I'll give Manley another recommendation.. I've had my Manley SET 300B's for about 5 years now  A light bulb went out once.  An added benefit: the sound is glorious.