Sonny you have a lot of feedback on polemaster and alternatives
I've used them all as well.?
polemaster is overall the easiest. you don't have to worry if your scope is too long, if you are in focus, etc. you simply plug in the polemaster, run their wizard and you are done. It gives you really good polar alignment, more than enough for observing, and perfectly fine for imaging. yes, it's about $300. However, it's not the most accurate PA
If you want an additional level of precision in your PA, sharpcap is probably your best bet (others have mentioned similar products). It also employs a wizard type approach and walks you through the process. it has the added? advantage that it's continuously plate solving and using your main scope's focal length, so it's tremendously accurate. it's also something like $10. However, you have to have your telescope reasonably setup and in focus, I've been using sharpcap lately for unguided imaging and it's really made a difference over polemaster
so it depends a bit on your needs and some of the other details of your setup and how much accuracy you need
Brian