Mine is the 450 in green pictured above. I been listening to it for the whole second half of the work day and it's warm - definitely not hot. Hard to tell how good it is since I'm listening to it with earbuds (although they are decent. Klipsch). Things do sound better over the standard line out on my macbook. Instruments are a lot clearer and more segregated in space.
Are you in the USA?
Yes. Central Illinois.