Hi David,
I would ask what subjects you shoot?
What benefits do you expect the CPL to bring to those?
UPDATE, just seen your reply - a valid reason there
I have one, but it is rarely used because for what I commonly photograph, the benefits Manfred mentions do not apply - hence my first question to you.
Then, are you looking for one because you've been told it is great, or do you know that it will address specific issues such as reflections, that you are facing?
Bear in mind that most CPL will lose you 1.5 - 2 stops exposure, forcing a slowing of shutter speed and/or raising of ISO (your aperture options on a bridge camera are probably limited anyway, hence not mentioning that). Can you cope with these aspects for the subjects you shoot?
I have the Hoya Pro-1 also and would recommend it as a good middle of the road filter.
4 posts in five years and three of those in this thread!
I feel I should welcome you back.
Cheers, Dave