If it helps any, I can tell you my limited newbie experience (started end of April this year).
I started with DX Rocs, wanted to move up to better plastic. I didn't care for the bead or dome of my Rocs, so I decided to try out a Z Buzzz and Z Wasp. Both, for me, fly very similar, with a tad more fade on the Wasp. A couple days ago I picked up a Z Comet and...man, I now fully understand the notion of understable/stable/overstable. If I throw the Comet, Buzzz and Wasp back to back, in general, the Comet (predictably) turns over, the Buzzz goes straight, the Wasp goes straight with more fade at the end than the Buzzz. I'm actually having a hard time getting the Comet to turn over and then fade at the end.
I kind of love it so far. I've always understood the mechanics and physics of stability ratings, but I've only just now seen it in action with the discs I throw, with reproducible results. I highly advise you, as a fellow new player, to pick up one of each mid (understable, stable, overstable) and see how they truly do have their own flight characteristics.