Many people find TheSkyX frustrating for various resaons, so it's a good idea to have reasons you want it, to outweigh the frustrations

Many people choose to continue using TheSky6 because as a driver for the Paramounts it works perfectly well with TPoint and all the rest, and arguably has less bugs than TheSkyX.
That being said, I use TheSkyX and it works well for me, although occasionally being frustrated by it's usability. Things which I like about it over TheSky6 are quite small things really:
- realistic/accurate photo overlay of my local horizon
- improved image link/plate solving
- more usable copy/paste of object details and display of them
- improved virtual sky which looks more "realistic" etc.
- more convenient time skipping
People who have problems with TheSkyX are often those who are using more ASCOM devices. My mount and camera all run using no ASCOM so I don't have such problems. TheSkyX is a significantly more resource heavy program than TheSky6.
TheSkyX needs a lot of screen realestate. I run 2 x 22" screens and it consumes one of them without thinking about it. I'd prefer to have more screen realestate to not have to flick between tabs so often but am saved somewhat from this by my camera control still running through CCDSoft so not needing to access all that functionality in TheSkyX.
Regards,
Roger.