I just made a quick calculation, just to get a sense of which is the cheaper way to get Notes, either buying PTS before the snapshot or donating directly to the pre-sale. I'm making several assumptions here, so yes, there are different cases where PTS could have been more advantageous or donating to the pre-sale less advantageous.
So let's say I bought PTS just before the snapshot, at about 0.01BTC/PTS and sold after the snapshot a little later at around 0.0075BTC/PTS.
1000PTS for the music snapshot would have cost me (0.01-0.0075)*1000 = 2.5BTC
Those 1000PTS entitles me to (1000/1,710,000)*0.35*1,500,000,000 = 307,017 Notes -- Assuming 1,710,000 PTS in circulation and a 35% initial distribution to PTS
Let's say instead of investing in PTS before the snapshot, I decided to keep my money and use those 2,5BTC to donate to the pre-sale. I'll use the average donation per day as of today, which is 26.48BTC/day for 5,000,000 notes.
Let's assume that by giving a little over several days and get that average per day, those 2.5BTC would entitle me to:
2.5/26.48 * 5,000,000 = 472,054 Notes.
With those assumptions (which are kind of realistic), I can get 53.8% more Notes investing in the pre-sale instead of having invested in PTS pre-snapshot.
Just saying there are cheap Notes to grab as we speak. If I were to be selfish I would just shut up and let the others figure it out by themselves, but more donations = more capital raised = greater product, so I still serve my interests...