So it's time for new tubes for my V8. Blew a power tube another one is on it's way out, a couple of the pre amp tubes are microphonic. So what should I get for power tubes? I like the re-issue Tung-Sols I have them in one of my SVT's. I've got EH 6550's in another they seem ok. Also I've heard that the Trace V-types can be picky about tubes. Any insight/opinions would be greatly appreciated.