I'm currently using both Raylectron and D5. Both have their strengths.
I have not tried many other render programs due to price.
I am currently exploring Rich's process of SU to Blender. Blender comes with two render choices built in. Cycles and EV. I cannot comment on their capability as I am still learning blender.
I've recently seen amazing, stunning renders, from TM, both here and on the Facebook group, that even I cannot tell from a photo. But I've also seen complaints such as yours and other different problems with TM as well.
I do see that all render companies continually making improvement to their output. Looks like an arms race is going on right now.