There are so many tours offering early entrance to Vatican museums/Sistine Chapel and I've heard how even with those there are so many people you can barely see anything in the Sistine Chapel. I'm overwhelmed by the choices. Does anyone have a recommendation for a good one?

Go to the official website of the Vatican. This is a popular ticket for 39 euros. : Guided tour of the Vatican Museums and St. Peter?s Basilica for individuals and groups ×

And let me add: book a mid-day timeslot if you can. Much fewer people around noon.

If you're going between April and October, and if you'll be in Rome on a Friday, you can take advantage of the Friday evening opening, when the crowds are greatly reduced. Some of the rooms are not open on these evening visits, but the most visited rooms all are, including the Sistine Chapel.

Night Openings: Open tour of the Vatican Museums and Sistine Chapel

They also have other "out of hours" tours. It seems as though their "breakfast and early entry with audioguide" is no longer offered.

Vatican Museums out of hours