Roy Martin makes some very sweet paddles, but I don’t believe he sells them commercially.
Another good choice is Superior Kayak’s carbon paddle, I have thousands of miles on mine. Mine have taken a beating (including dealing with the rocky shores around Newfoundland) and are still going strong after eight years. The shafts are a bit larger diameter than most, which might be an issue for paddlers with smaller hands who wear gloves or paddling mitts.
I have both 86" and an 88" two piece paddles. If you ask, Mark will make the halves interchangeable. What that means is that on a trip, I can combine the pieces to make an 86, 87 or 88" paddle to handle different conditions, and have a spare.
Not cheap, but very effective and robust.
The two-piece version has a Lendal-lock that uses an allen key to tighten an internal cam to remove any wiggle. They are rock-solid in use.
FYI, for discussion of all things Greenland-related, consider posting your question to the Qajaq USA forum at http://www.qajaqusa.org/cgi-bin/GreenlandTechniqueForum_config.pl.