I just purchased Notion and installed it this morning.
Installation was a snap and the manual seems well written.
I updated to 1.6 without a problem
I updated the instrument set without a problem.
I added the string expansion without a problem.
I began using the program:
Score setup was no problem once I learned my way around.
Playback sounded very good, note entry was a bit difficult without an audition feature, but I understand that is coming at some point. I can use a midi piano for the time being.
I am a Finale 2006 and Sibelius 4.15 user. I rarely use Finale, but use Sibelius all the time. Notion has great potential, I look forward to the future enhancements that will make me go it first.
Thanks for all of your hard work!