I can't ever seem to find the Comp, but I have read a good amount of reviews around the web about it and most agree that its one of the top briquettes on the market. I still use KBB but only if I'm grilling and can get the 40lb double pack from Lowes. If not the double pack, then I will pick up a large bag of Steakhouse briquettes from my local grocery store which are cheaper than the KBB bags.
I've always had great success with Stubb's for the smokers though. I can't imagine KComp would be that different from Stubb's though, aside from maybe the density like mentioned above. At some point I'll track down a few bags of comp and compare the two though.
18.5" OTS, 22.5" OTG, CB Silver(Rip), Vintage Coleman Bullet, Pit Barrel, UDS