So I am new to the GTR world and still have a lot to learn/research before pulling the trigger on one. I know the used GTR market is kind of insane right now judging from my constant hounding of Autotrader. My criteria is 80k max, 2012+, under 30k miles preferably and clean history. My other options for my first "expensive" car include a late model 2018+ E63s, 2018+GT350 or a gen 3 viper. All things considered i do have to take into account that I live in a town with hail, snow and other anomalies that could affect the roads at times. Vehicle will be purchased in full so not worried about payments but insurance does raise a slight concern due to the conditions of my location. Any input from you seasoned GTR veterans would be highly appreciated especially things to look out for when purchasing, vehicle conditions, mechanical issues i should know of and etc.. My current prospects are a white 2014 out of Portland, and a white 2012 out of Denver. There's very few for sale on the national market right now so you all should know exactly what cars I'm talking about. the 2014 has higher mileage (42k) and engine modifications, and the 2012 has been in a moderate accident according to Carfax. Also a concern I have had is that where i live is 6k+ elevation so would that have any sort of negative affect on the stock engine or modified? Thanks in advance, crazy times we are currently in with the used car market.
Welcome to the forum.
I'm surprised you didn't include a M5 or M3/4 Comp.
I'm starting to be more biased towards the more updated and roomier sports sedans than the outdated, but still very capable, GT-R. Today, I'll be looking at a 2022 M4 Comp. xDrive in Mexico Blue @ $94K. I was hoping for an M3, but all of them are spoken for here in Colorado (which by the description of elevation and hail you gave, seems to be the place you're at

)
***UPDATE: went to see the M4 xDrive Comp. and was so close to closing the deal until my wife saw the white interior (we have a 10yr old). That was the deal breaker.
So we're thinking of ordering one, now that we saw one in person. Interior is so modernized, and M4 Comp are doing 0-60 in the low, low 3 second out of the box. Not bad for option B.
***Update to the Update: I bought the 2022 M4 Comp. xDrive.
The GT-R market right now favors SELLERS and NEW GTR BUYERS, in my opinion. The sellers part is obvious; GT-Rs are overpriced, and folks are paying asking price. The "new GT-R buyer" part is, in my opinion, the result of the eagerness of folks that have never experience "GT-R ownership", to buy and scratch that itch to own a GT-R no matter the cost. However, I think that folks like myself who have scratch the GTR itch and know the real deal (including the perks) of owning a GT-R are more reserved to jump in the market and pay $20K more for a GTR that cost less a year ago (used & new).
One thing you got going on your favor, is the number of pre-owned GTRs in the market. Check out my chart at the top of this thread:
New and Pre-Owned GTR Market. I show the number of pre-owned GTRs available according to AutoTrader and CarGurus and also a chart showing the number of pre-owned GT-Rs available per year model.
With the kind of capital you have, if I were you, I'd buy new (of any of your options listed above) and finance the rest. 30k miles on a GTR is no walk in the park, and at $80k, I hope you have money for unforeseen repairs (worst case scenario). Just my two cents.