Yes, S3d does have ts faults, the chief one being lack of good doumentation. understandable for free stuff but unacceptable at $140.
It is my primary slicer though. As Mr. Aardvark says, Once you have it set up it stays setup. S3D support has been very helpful.
Sometimes I still use MW though for very simple prints, and for some iinvolved dual extruder prints because MW will automatically line up both files which is very time consuming manually.