They are not built on wooden forms in some guys garage like a lot of custom bows.
Now that's funny!
The only negative that I see with ILF limbs is that most all the manufactures out there; match their limbs via a weight/bend test. In other words they are not true matched limbs. Your 45 pound limbs you buy may not have even been built the same day let alone come off the same form. Different quality control between the major company's yield different quality. Right now I'd say W&W are tops, with Samick coming in a very close second.
Some of the best limbs I've ever had the opportunity to shoot were some old SKY Archery (Earl Hoyt era) maple core & glass Conquest limbs. I personally don't like the feel of foam cores & carbon. And hate the ring from carbon.
