You know I bought a DR 3ch with the 440 6L6's in it and called Mesa about my LSC with the 430's. The guy knew they were crap and so I asked if I could warranty them, he said were they 'broken' so I say, 'no, they just sound DEAD'. He said, 'no'. I replaced them as soon as I got replacements and haven't looked back.
Funny thing about this story is Mesa will Void your warranty if you don't use their tubes and they KNOW that this batch was crap but wouldn't warranty them. Makes a guy want to Always buy Mesa tubes, doesn't it?
I am sure that there are folks out there thinking that the Lonestar isn't all that hot of an amp not realizing that if they would spring for a better quality tube than what Mesa is selling, the amp is AMAZING!!!! I only hope that they don't wait the 5 years of the length of the warranty to try some other branded tube besides Mesa crap tubes......
And for the record I have been playing Boogie amps for better than 20 years and I have NEVER thought their tubes were anything special. For a while they were all we could get but not so any more.