The tweeters on the M80s are not so much bright as they are accurate. The M80s are a forward sounding speaker meaning they have the mids and highs(vocals) presented to you more so than the bass. The M60 is more laid back as the mids and highs are a little understated and the bass lines come through with more vigor.
The factory outlet is a bit of hit and miss but I know of only one person that had a really bad set and Axiom sent another set. My M60s I just received have only 1 flaw on one speaker midway down a side the vinyl appears to be peal away from the backing, but it is only about half the size of a pencil eraser. The other speaker has a nonperfect edge on the bottom rear.
