I have an ISP decimator and a DBX 166xs. Right now the ISP is in the input chain, and the DBX is last in the effects loop. (I use one side, right into the other side, as I heard this is best.) I'm going for that my-amp-sounds-like-its-off-unless-im-playing type of deal. I heard the ISP is best in the input chain, but the DBX 166xs has compressor options which might be nice for the guitar, and I don't know if those work in the FX loop. Suggestions?