POG and HOG are digital and polyphonic (can track chords) and the Microsynth is analog and is monophonic (can only track single notes). There are many other differences, but this is the big difference.

HOG:
Polyphonic
Voices: -2, -1, original, +5th, +1, +1 + 5th, +2, +2 + 3rd, +3, +4
footswitchable 2 band Attack Decay Volume Envelope control
Low pass filter with Q.
Expression modes: octave bend, step bend, volume, wah, filter, freeze gliss, freeze volume
other stuff: spectral gate, presets with optional pedal

POG2:
Polyphonic
Voices: -2, -1, original, +1, +2
Low pass filter with Q
1 band attack volume control
other stuff: detuning for +octaves or + and original octaves, built in presets

Microsynth:
Monophonic
voices: -1, +1, square, original
1 band attack volume control
attack filter with controllable start/stop and sweep speed

to sum it up:

the main draw of the POG2 is that it’s polyphonic, has basic voices, built in presets, and a simple volume attack control and filter with detuned settings. Makes for good organ and other type sounds.

The main draw of the HOG is the multitude of the voices, the expression mode, and the much more versatile volume attack decay control.

The main draw of the Microsynth is the fat analog synth like sound (and many analog synths were monophonic) mixed with the awesome awesome filter. There aren’t any pedals out there that do what the Microsynth’s filter does. Most filter pedals don’t really have smooth sweeps, and they die out when your volume dies out. But the Microsynth filter is only triggered by your attack instead of following it, so it doesn’t have those sometimes bothersome quirks.

I am trying to choose between the HOG and POG2. Is the HOG capable of achieving the sounds of the POG2 as well as the extra settings that it can do above and beyond?

I find myself wanting about 12 EHX pedals or so and I must narrow it down. I am mainly after “strings” effects

Thanks Much

just wanted to say, that this thread has been very helpful! im in the same boat, i have a microsytnh and currently have a POG but am looking at getting a HOG to take the place of both. just a suggestion, about the detuned octave issue: you could also use some type of chorus pedal, and maybe drive the HOG. i dont have a HOG (yet) but judging by the way the POG reacts, im sure you could get some similar results! i love my POG, and the microsynth was cool, but the tracking was horrible, and i didnt find the pedal very usable in the type of music that i write. hopefully the HOG will be what i need!

well, i already got rid of my microsynth, just not a big fan of it. it was defintily cool, but nothing i would ever use for. i feel that the HOG is more usable for the music i write, i may still keep the POG, or at least hold onto it until i see how i like the HOG!