There's an excellent series of stories at Engine Labs about Race Gas vs Meth Injection vs Boostane vs E85. Sadly, Torco wasn't part of the test.
https://www.enginelabs.com/author/bobmorreale/
For my part, I've stayed with Boostane for this seaon's racing. If you sign up for their emails twice a year you'll see an offer to buy their products at 20% off, where I snap up the 5 gallon pail.