I think the reason both albums were underappreciated was just bad timing. GGTN came out in the late 80's when that kind of magical melodic sounding rock was dwindling in popularity and grunge was becoming trendy, and TC came out in the mid 90's when Grunge was dwindling in popularity, plus shortly after Cobain's death, so lot's of fans considered Live a "poor man's Nirvana". Whatever the case, King's X has my respect