If this has already been discussed to death somewhere, please point me in the right direction. I've searched, though, and can't find it. What is the difference between a G&L L1000 and L1500? Is the 1500 the new and improved 1000? Or are they different animals all together? I like the 1000, but the 1500 seems easier to find and people have very high opinions about the 1000's they are selling.