I feel like the 911 and Cayman, while awesome cars, are so much closer to the Z categorically, it doesn't add much stylistic depth to your stable
. R8 I think with most option sets would tip over the $100K mark, in many cases by a good chunk. GTR would be be my personal choice from the set, if I were in the same boat. You could use some leftover budget to have someone fix up the interior to be snazzier