If you're going compact you need should use the 11-25.
50x11 is around the same as 53x12 gear inches and you're not going to be using 30x27 much.. unless you weigh 200kg and climb the alps or something.
The 11-25 was the original plan. My aging legs are just a bit tempted by the 12-27.
The 11-25 was the original plan. My aging legs are just a bit tempted by the 12-27.