I started out as a BIAB user on my PC and was a committed PC user for many years. The iPad and my MAC user friends got me to thinking about switching to an iMac and I did. The hardware and available software on the MAC quickly showed me why people love it so. I have a new PC at work, and so have a daily experience to compare the two systems. It is easy to see why the the MAC market share is growing. Now, after a few years away from BIAB, I bought the crossover package and began using on my iMac. BIAB is still the easiest and best music making software for regular folks (non music professionals) I have found, even with its current feature set vs. the PC version. MAC users can only hope that PGMusic finds the way to take BIAB for MAC to a higher level. I think they will be rewarded, but understand the risk/payoff considerations for a business. To a degree, the limited share that Notes Norton sites is a self-fulfilling prophecy given the time in market for each version. Something to think about, though...given the pace of new development, I wouldn't be surprised to see a competitive product coming in to fill the feature gap. A key factor would be to think about how to deliver leading edge feature set using MAC thinking, rather than having to focus on converting PC versions.