M thinking of jumping up to a higher level of IEM EAR BUDS. I have the Shure PSM200 with Se215. I like them and they work, I've been told upgrading the buds before the transmitter makes a much bigger difference. What do ya'll say? I've heard good things about Westone, JH - who else? I don't expect to go nuts but could see moving up a few notches. Unless something like the new PSM300 transmitter is going to make a bigger difference?