NOTHING out there with better balance is in the same performance class and also in the same price range' For balance these are your options.
1.BRZ/FRS
2.Miata (You'll love the doors)
3. Used S2k
4.An RX-8
You can get a used porsche cayman and risk high maintenance costs. It seems you hate going fast... You left a Z06 to a Z??????? After being here years, doing research and taking test drives... You bought a car you were 50/50 about and now want to trade it. Your motives for buying the z boggle me? You liked the interior but hated everything else????
My advice is learn about other cars in the home forums of the cars mentioned... Good luck with your next downgrade. If you woulda kept your vette you'd be 1 year closer to owning it.