I don’t know how sensible it is to compare different funds and their philosophies with each other, but Proprius Partners has prepared over 100 pages of material regarding their investment philosophy and investment processes.
To me, at least, this inspires confidence and gives an impression of professional conduct. Selling (either) isn’t an exact science, so ultimately the results will show how well they succeed, but at least the criteria for when to sell have been disclosed transparently.