I grow my own scotch bonnet peppers and I have a particularly hot AND flavourful hybrid from Jamaica but which takes quite a bit of attention to grow.

No sauce is a good as the fresh peppers from the tree and scotch bonnet (the hottest of the habanero family) itself is hottest and has the best flavor when still green, just before riping.

That said Dave's Insanity is crap

My favorites hots sauces are
1) The Red Pickappepa from Jamaica ( which is no longer manufactured because it took three years to become "matured") but I still have a few bottles left.
2)The "yellow" - Salsa Kutbil-ik, El Yacateco (as opposed to milder green and even less so red) from Mexico
3) Matouks - the red or the yellow variety from Trinidad.
4) Any of the crushed (with seeds) Scotch Bonnet Pepper sauces from Jamaica - JCS Brand and there are a number of others.

mike