I think the correct order is
Originals: 6, 4, 5, 1, 3, 2
Pixel Remasters: 6, 3, 1, 4, 5, 2
That's right, I think 3 gets a significant bump from the remaster. 5 is probably a better game, but it's a bit too long for me to do casual plays of it like I do with 1/4/6. 3 is so drastically improved...