I Hated the PI attack shorts - the padding was just about the bulkiest thing I"d ever worn and I seemed to be allergic to something they use in the padding. I also tried a Terry Sportco saddle and couldn't get it OFF the bike fast enough. Sounds like you're going thru the great experimentation phase right now *shakes head* it could be the shorts, the saddle, both, neither - just make sure you can return whatever you decide to try! and good luck!
Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways, champagne in one hand, strawberries in the other, body thoroughly used up, totally worn out and screaming: "Yeah Baby! What a Ride!"