I ve had Pathos Inpol 2, did not heard the other amp, but perhaps my impressions might help you.
First, I would say that I would never advice paying the full new price for Inpol. If you can find the amp for the good price in sh (less than half of the new), than perhps, otherwise, there are amps with better sound for the money.
I would dare to say that regarding cost/performance ratio, their Classic mk3 model is better opportunity. For one third of the price (in Europe) you will get roughly 90% of the same sound. Sonically and tone wise they are very, very similar, except that Inpol 2 throws larger and deeper stage.
Sweet sounding, good for the long listening, nice on acoustic instruments, litlle shy in the bass (with Sonus Faber speakers, Cremonda Auditor M and Guarneri H) but not the last word in the ultimate transparency or in dynamics
Switch power supply, had problems with it, but got it serviced from the factory, who provides excellent support and service with very reasonable (service) prices.
If your speakers do not need 45w in A class, I would advice you to try some high quality lower powered tube amp instead