Exactly James. I have all the PF albums, and I would say the first two have a lot to love on them. Cassidy’s voice was sped up slightly on the first two albums to make him sound younger, but the overall result is still very good. After Sound Magazine, I would say the albums have a little more filler. There are still excellent songs on all of them, but also several that are not as memorable.
As Matthew says, Bulletin Board is a very unique album as it came out just when the pop sound was changing toward R&B/dance music. So there are songs on there from many different genres. That album also contains one of my all time Partridge faves: