I think that aside from the ones that you have, Revolver is my favorite but it's very narrow. Your next three would be my recommended next three overall. Revolver is a top 5 all time record in my book. That said, the S/T White Album and Rubber Soul are also super high on that list as well. I think you'll be happy regardless of how you do it.
After that, I would test the earlier waters and give Hard Days Night a try. It is their earlier, poppier sound, but it is in my opinion the best representation of it. Let it Be is fantastic, Help is fantastic, don't sleep on Past Masters 2 as a really amazing comp. Magical Mystery Tour is a little uneven, but has some true top tier Beatles tracks, then you start getting into the really early stuff which is quite good, but not as good as what they became. I would probably take Please Please Me of that lot, but they all have really good songs and some skipable songs. Please Please Me has the best of that stuff in my book though. Honestly, I would eventually get them all, but for what it's worth that would be my road map to acquiring them.