It is the same for me. I like the camera control functionality of Maxim DL. I got the Sky X later when I needed a more capable planetarium software for my spectroscopy projects. The same goes for PHD2. I was using Maxim for guiding but I found keeping the star on the spectrograph slit hard going, so I tried out PHD2 and have never looked back.
I should add I am using Maxim DL 5, an old version. When I need to change software I may look for cheaper options as I am no longer making use of the image processing functionality of Maxim.