Guys, I have read quite a bit online about how good the 2230 is. I don't know electronics but I know that there are differences between the 2230 and the 2230b. Is the "b" model sonically as good as the non "b" model? Is it worth restoring the 2230b? Also I have read that the 1060 and the 2230 share similarities. Does the 1060 and 2230b also share similarities? I am looking to spend my money wisely. Thanks. Norm