Did you get your new speakers?
I just invested in a pair of X300A's, I also have the A5's (not the +'s, mind you).
I must say, the X300A have exceeded expectation. They are addictive. The A5's I have had for a few years, and love them, but the X300A's are in a whole different league. The have a wholly involving sound. Stereo sound stage and separation/detail is very coherent and absorbing, encouraging one to listen into the music, to how instruments interplay with each other.
Also notable is the upper mid/lower treble, it's incredibly smooth and detailed, giving percussion a very lifelike edge, it jumps out at you in a good way.
I like most genres, but it's making my classical collection very enticing.
As I am running them in, they are sounding better and better, smoother , more involving. Can't get enough of them at the moment.
I had these in mind for a long time, and as a build up phase I have reripped all my cd's into FLAC, a worthwhile exercise. However 320k MP3's are not left out in the cold. It's just that, after hearing what these can do, you cannot help but want to give them the best to properly shine.
If you can afford them, go for the X300A's. I already want a 2nd set for the kitchen to replace the A5's relegated to that location, lol!