Low Gap, the 150 is what it is - a $175.00 all solid 12th fret to the body A style mandolin. It is not as good as your Kalamazoo. Why don't you just play that thing, man? The fact that it's old is no reason not to play it. You keep asking the cafe about all these mandolins, and honestly, not one of them is any better than what you have. Besides that, you are the one who will play it so our opinion is not really what counts. If you insist on getting a new one, go play some mandolins and buy the one you like the best.
"I thought I knew a lot about music. Then you start digging and the deeper you go, the more there is."~John Mellencamp
"Theory only seems like rocket science when you don't know it. Once you understand it, it's more like plumbing!"~John McGann
"IT'S T-R-E-M-O-L-O, dangit!!"~Me