Well, if the thread has returned to life, could I suggest considering the Pigtronix Philosopher's Tone as well as the Barber? The Pigtronix also has a tone control to help correct for treble loss. Only potential downside is it runs on 18 volts not 9, though a wall wart is included.
Mine has displaced both a Keeley and MXR Supa-comp as my go-to guitar compressor for getting sustain out of clean amp settings and with thr compression turned up and the blend set mostly wet does the Ross/MXR "clicky" compression as well.