I'm a big fan of CaJohns. Viper has been a mainstay in my arsenal for the past 10 years. Recently, I've been trying the non-extract sauces, and I'm sorry to report I've been disappointed by the level of heat. The flavor can't be beat, but ...
I made a roast beef sandwich yesterday and used like 1/8 the bottle of Lethal Ingestion. The heat amounted to about what would have been like 2-3 drops of Viper, and I paid $25 for the bottle! Frankly, I didn't notice that it was ANY hotter than 10 (Jolokia). I'm a BIG fan of CaJohns products, but I don't think the Lethal Ingestion is worth the price tag. Also, the taste is so similar to the 10, I think I'd have a hard time telling them apart. The Fatalii flavor is very strong with both.
The Fatalii Fire is one of my favorites (along with Jolokia), but I rip through the bottle in a few meals... I think I'm going to stick to the Fire, Jolokia and Viper. No more LI for me. And I have a bottle of Talon I haven't cracked open yet...