I ended up using LogTen Pro. I know that there are some shortfalls with the program and subscription model; but ultimately I started a long time ago, and am comfortable with the software.

I like the idea of just using the paper logbooks for endorsements, but ideally would just like to bring the 1 printed (digital) logbook, instead of the 3+ I have, with the endorsements, grade reports, and checkride results in various sections of various books.