I normally use two kinds of CA: medium (usually something from Home Depot) and thin (Bob Smith Insta-Cure). I use the Insta-Cure mainly for hardening nose cones and wiping on the ends of body tubes. Today I found myself on the Bob Smith website kind of by accident, and holy moly there are a lot more different kinds of CA than I ever realized. Some look quite appealing, at least from their description. Insta-flex: less odor and more flexible. Would it work as well for hardening nose cones? I'm can't decide if flexibility would be a plus or a minus in that application. Insta-flex+: clear, rubber-toughened Super-gold: foam safe! no fumes! flexible! no fogging! I probably shoulda used this to glue on the clear nose of my IRIS-T. IC-2000: black, rubber-toughened ("tire glue") There are a few others but I'm tired of typing. And so my question is: does anyone have experience with any or all of these particular varieties, and are there some that are particularly well-suited (or not well-suited) to typical rocketry tasks? Is any of these varieties better for balsa hardening than the Insta-Cure I normally use?