I replaced my outlets with the FIM several months ago with noticable improvement. With that said, the one's that were replaced were 15 years old. Jcbtubes (Agon member) did a direct comparison with the FIM against another highly touted outlet and preffered the FIM. I wasn't there but I guess I'll take his word for it. Sometimes he guesses right.
SOMEtimes.
SOMEtimes.