I find the choices a bit twisted by your own bias.
Not hard to tell you like PHD.
My guiding experiences started with GuideDog, which is reasonable. But I soon changed to Guidemaster and was amazed at the simplicity and quality of it.
It made GuideDog look like a toy.
What I like about Guidemaster is the ease of use, simplicity in layout, accuracy, and it is definitely not clunky. The onscreen image is very crisp with nice stars, and the guiding error graphs are great.
Not once have I ever had a problem with Guidemaster in 5 years of using it.
I did try PHD and gave up. Too clunky.
At Astro Camp I like to watch others at work, and the amount of times I see others struggle to get PHD working 'just right' is too many.
PHD may suit a lot of people, but my personal choice is guidemaster
