For $5 you'll get exactly what you paid for. Guaranteed.

FWIW everything you've described- turning up the treble, chorus, distortion- are all famous for hiss. Sure, there are exceptional units (usually costly) that do not add hiss, but they are the exception. In addition to the Rocktron unit mentioned, there is a very nice unit from ISP, but again it costs just a bit more than $5.
So you could buy the $5 one and either it works or it doesn't; you could buy one of the known-to-be-good but expensive units; you could live with the hiss; or you could turn down the treble on your amp's EQ, since the noise exists primarily in the high frequencies.