My amp has quite good sounding overdrive channel but I cannot use it because of other effects(especially ditto looper). It does not have effects loop.
I've tried two things so far: digital amp simulation of Rectifier and OS-2. Simulation was good and OS-2 was not the sound even usable. On distortion mode there was a lot of high frequencies that shouldn't be in guitar sound but people tend to use it with tube amps that color sound even on clean channel. Roland very clean simulation + OS-2 was also quite good.
Are there more relevant pedals or the amp simulations is the only way to go?
If they are how to find them?