Unfortunately, no one in this thread has responded to my question directly based on direct personal experience with an upgrade.
@skinzy I did. Apparently you didn't consider my answer valid, even though it was based on exactly what you asked about. I gave you an accurate answer; in case it was not obvious it can be boiled down to this: 'It depends.'
I gave the reasons why. Put another way, going up the line may or may not be an improvement; its entirely possible that something far less expensive might sound better.
I can go into the technical reasons why this is so if you are interested.