WTF should I buy (A consolidated list of bad decisions)

[Tyler.M]

I feel like I'm threadjacking but, you know how this goes, once you start shopping you literally spend all your waking hours contemplating every data point. That's what I did tonight (gotta love them slow work nights).

Getting closer to an idea of what I want. I'm definitely narrowing it down after driving a few things over the last two weeks, and also thinking more clearly about my usage scenario. I went to the Verona BRR-SCCA autocross today and spectated and I definitely want to participate in next years season. Some of my cars I was thinking about wouldn't be properly suited for that sort of thing. I'm pushing back my buying window to next year which means that I can probably expand my initial budget to about 20k.
Here's my shortlist of cars I've driven I could definitely live with:
ND Miata
2017 + BRZ with the performance package
Fiesta ST (I drove Taylor's and it's stupid fast for what it is)
NB Miata (would love to try out a mazdaspeed)

Possible contenders:
1st gen IS300
WRX
C5/C6
Boxster
370z
Cayman (I don't think I can get into one of those in my price range)
Ecoboost mustang?

I still need to drive a lot of stuff. Definitely a WRX and a C5/C6. The Fiesta got me over my RWD superiority complex so a good FWD platform wouldn't be bad either.

The search continues.