Any company that doesn’t know the difference between a year long license and a lifetime license one should be approached with extreme skepticism. To the posters of the extensive testing results, thank you for saving me the time and frustrations of having to do those tests myself. I am in your debt.
I use “Do Your Data Uninstaller Pro 5” (Originally gotten here), and though a two-step process to remove leftovers, I find it very thorough and effective, and rarely needing to do restarts to clear my OS of leftovers. I highly recommend it.