So I have a gentleman who has offered to trade me his 1994 Gibson J-30 "Montana" for my minty 2010 SG Standard. Does that seem like a good trade, monetarily? I haven't found much info on this model, other than that it is supposedly a plainer looking Hummingbird with a longer (25.5") scale. What do you think? The Gibby serial number is 90464028.