This not a thread to extol the virtues of the XL line, there are countless threads doing that, but rather to highlight the differences between the 1, 2 & 3. Anyone can read the specs over at Jim's place, so this is just a few observations from someone who has the good fortune to own all three. First the published specifications:
Knot Loft Handle
1XL 25 46 40
2XL 28 47 45
3XL 30 53 50
My measurements are a bit different and I suspect there'd be subtle variances with most brushes:
Knot Loft Handle
1XL 27 46 40
2XL 27.5 47 44.6
3XL 31 53.4 49
Obviously the most significant difference is in the knot in the 1XL. I can't say that all 1XLs would be sized like mine but will say that in use the 1 & 2 feel almost identical on the face. I tried a shave last night using both and they were indistinguishable. So if you're thinking of an XL and the 5mm shorter handle is not an issue, you'd do well to check out the 1XL. BTW, as a point of reference, the 2XL's handle is very similar in size to the Duke 3.
Knot Loft Handle
1XL 25 46 40
2XL 28 47 45
3XL 30 53 50
My measurements are a bit different and I suspect there'd be subtle variances with most brushes:
Knot Loft Handle
1XL 27 46 40
2XL 27.5 47 44.6
3XL 31 53.4 49
Obviously the most significant difference is in the knot in the 1XL. I can't say that all 1XLs would be sized like mine but will say that in use the 1 & 2 feel almost identical on the face. I tried a shave last night using both and they were indistinguishable. So if you're thinking of an XL and the 5mm shorter handle is not an issue, you'd do well to check out the 1XL. BTW, as a point of reference, the 2XL's handle is very similar in size to the Duke 3.