Everyone has different opinions on this subject, I have never tried Simpily3d simply because it does not have a 30 day trial or reduced functionality test program.
Plus the initial cost is out of my budget maybe if they reduced it more 3D Printer users would be able to test..


After reading many post though I believe that if Simpily3d had a free opensource slicer completion it would definitely be PrusaSlicer 2.3.0.
I have printed many models using information posted from Simpily3d owners and have made excellent 3D printed models using PrusaSlicer.
Again without Simpily3d and PrusaSlicer printing side by side it would be very difficult for me to say that one is better than the other.

Only that you can try PrusaSlicer 2.3.0 and if you do not like it you could purchase Simpily3d then maybe you could post which is better.
I have never seen, heard of read about a real life function by function comparison of the two slicers.