I've been looking around at seven strings today. Being that the only ibanez seven strings on sale in the uk, and that i could possibly afford, are the 7321 and the 1527. I've been thinking, how long before they get discontinued? I would really like to own an Ibanez seven string at some point, and finding them second hand seems rather challenging. I don't know how well they're selling, but the other ibanez sevens seem to all get discontinued eventually. Also what are the differences between the 1527 and the 7620? and which would you say is better?