Need a better way to tell 1.x and 2.0 appart

If you have 1.3 and 2.0 Beta 1 installed, and want to open an mscz file, some decision needs to be made whether it is to be opend by 1.3 or by 2.0 Beta 1. This seems unvoidable, but I see some problems with that:

a) I found the defaults to be inconsistent between 2 machine, both have either version installed (plus some nighlties), both Window 7 Enterprise, 64bit, both had them installed in the same order, however on one machine 1.3 was still the default applocation for mscz, on the other it t was 2.0 Beta 1, Any idea why?

b) in the context menu 'open with' it is pretty difficult to tell the 2 possible applications apart, the only difference is the Color of the Icon, blue for 2.0, black for 1.3.
See the dialog to select the Default application

(can't capture the 'open with dislog, bit it has a similar siisue, onle the Icons are smaller))
I think the 2.0 Icon should include a 2, and/or the programs name should something like mscore2.exe