Hi,
I'm actually the Braca paddle importer for the US, have been using the various versions of the XI for a couple of years. The Surfski version of the XI is different then the Surfski version of the IV that Oscar uses.
The XI Surfski and Extralight are essentially the same paddle in weight and stiffness. The XI Regular has more built in flex, but weights slightly more. Individual preference to which works best for the paddler. For the XI Surfski and Extralights, we use more flexible shafts. For the regular, folks tend to like slightly stiffer shafts...all depends on preference and what works for you.
The IV Surfski that Oscar uses is slightly heavier then both the Extralight (lightest and stiffest) and the regular IV, but obviously thicker, stronger to handle surf. We build all the Surfski IVs (and most XI EL or SS) with 19K soft shafts (Oscar's input to Braca) that have 10cm of adjustment for the wider range of ocean paddling.
Just another note on the shafts, I have 5 different stiffness of 2 piece shafts to mix and match with all the blades depending on the requirements. Lots of combo options.
If you'd like, lease reach out to me directly at This email address is being protected from spambots. You need JavaScript enabled to view it. if you have any more specific questions (have all the blades and shafts in stock)
Thanks
Chris
FastPaddler.com