I have a strong preference for conventional rigs (slap-reefing) with a good slide system, triple reefing setup, and lazy jacks or the Dutchman system for ease of dropping sails. This is a relatively simple, time-tested system that requires a bit more work for the crew but it has its advantages: better sail shape (performance), full-batten capability, less weight aloft, and ultimately, better reliability. If in-mast furlers (IMFs) jam, it is likely to happen at an inopportune time. I am not a fan of IMFs for this reason. Nevertheless, the conventional versus the IMF rig debate rages on.

Now to IMFs… many (say over 50%) of new monohull cruising boats over 40 feet now are built with IMF systems and this includes premium "blue water" boats - Oyster, Halberg-Rassey, Hylas, and Amel to name just a few. Production boats such as Hunter, Beneteau, and Catalina use them. Charter fleets which use many of these production vessels in their fleets use them extensively.  Most of the charter boats in the East Med use them.