who is best cam software and why ?

sorry to tell you,
but best cam software is human brain.
the only thing a pp is needed is for complex geometries as a point cloud connected via short lines --> 3axes
for 5axes it is almost the same, but also almost unnessesary.
All CAM software is bullshit regarding empty movements and part manufacturing times.
Best way to do is using complex contours as subroutines, maybe from CAM.
What i wanted to add to the CAM is as i invented in PTC pro NC a definition of raw and finished part, so that there is no empty movement, and furthermor i wanted to have a calculation of milling force reagarding constant force on the endmill or roughingmill, achieveing either more precision an finishing and more efficiency in roughing. I wanted to implement it myself but industrie blocked the usage of my pc lasting 3 zears now. IDEs get broken, compilers get manipulated, code gets stolen and was stolen, stored code was blocked either from reading and opening and also to send to other software-architects to complete my work.
finally i am recreatin myself from beeing brought to living on street by car and cad software industries paying idiots calling themself hackers, not knowing that they are crackers on computers and some on women..
sincerely sorry at the end out of topic,
greets leo,

cnc coding is easy, but you might need experience on the machine, forces, acoustics, lasting time of mills,... measureing, test cuts