in the future, i would like to eventually purchase a 6 string as i now understand the a 4 string is just a fancy rythm keeping device for bands who want to keep bassists in the shadows of the guitarist. BUT, are all 6 strigs boutique instruments? i have only seen high end 6 strings on the tb forums, they look like they are worth more than my car. Keep in mind that this purchase will be in quite a long time, but i would like to start looking now. do mainstream companies have 6 stringers not advertised? i live in australia and the second hand bass market is quite crappy, so it will probably have to be a new bass. Thanks for any suggestions.