I'm looking to pick up a pedal for the #1 position in my drive stack. I know I'm going to have an OCD for my most saturated sound but I'm looking for that #1 position, light drive, rhythm tone. Can anyone lay out for me the difference between the Analogman and Keeley TS9 mods? I'm also considering a Keeley Sparkle Drive for the #1 position. I had a buddy who said he loved his Fulldrive but it didn't stack well. Any thoughts? Thanks for the mad wisdom!