Ok, I hate rumors! Again I heard someone saying the JCM 900 series are known to be the most unreliable Marshall ever made. They shut down on gigs, are always in the shop, a nightmare to work on, etc.. On the flip side I hear the complete opposite, most requested backline of the major acts. road worthy, proven work horse's, etc.. So I'm confused. What is it? I'm really not interested in their tone (good or bad), diodes/solid state guts. Or they are "not as good" as an 800. I would like to hear real life, true stories of people who have owned these amps, kept basic maintenance on them, used them on a regular basis and found them to be totally unreliable for the gigging musician/weekend warrior player.