I think there are plenty of good looking open source fonts, but there aren't that many super solid ones.

Glyph wise, I would love to have both tabular and proportional numbers. I also want great hinting so it looks good on Windows devices. I also prefer something that isn't strongly tied to another brand like Roboto is to Android.

Once you take those into account, there isn't actually a ton of options left. And if you want something that compares to the quality you get Hoefler & Co, you end up with close to zero.