I haven't used TumorX ... but I've known of a variety of "black salve" formulas that vary greatly in effectiveness.
Now, I recommend the original "Cansema" from Alpha Omega Labs. I've known people who've tried them after finding out how many people were stealing their trademark, which occurred after the FDA gave Alpha Omega the shaft. I've heard that the product works as good or better than others ... technical support is good ... and they are based in Ecuador, so I don't have to worry about them closing down any time soon .... their site is www.altcancer.com