Welcome!!! I don't own a 323. Generally speaking they've got a good rep. Pearson built good boats. And the 323 was one of them. The 323 was less racy and more comfort oriented than many of their previous offerings.
Like all boats of that age learn as much as you can about them and when you find a contender make sure to have it checked out by a surveyor.
Lastly, look at some other boats in the same price range. Though I'm a Pearson fan myself, no reason to put blinders on. There are many quality boats to consider.