should I buy a 2014 370z or not?

The Z

If you really want a good deal and maybe color or trim is not a big deal try looking into 2013's I bet dealers really want to get those off their lots. I got mine for invoice plus rebates/incetives which was like 3500.

It was a black M/T base+sport package.
Nav was not an issue with me mainly because you can buy and install a double din headunit now a days that usually have better nav systems then OEM anyways. And its only like $500 vs the 2k for OEM or something like that.

As for the BRZ dont...trust me. I owned a FRS for a year. I bought it in October of 2012 when they were first starting to hit dealers and being in AZ it is one of the largest FRS/BRZ communities in the country aside from California of course, so I have seen the issues others have had and the power they have added with issue after issue or dollar after dollar being spent on high end parts. But stock its a power let down. And to get it to perform anywhere near expected a lot of money will have to be dumped into the engine/suspension. Not to mention its still a new platform so many of the issues with it toyota/subaru have written off as known issues with the car and a "known characteristic" basically those faults are included in the purchase of the car lol.

I switched over to the 370Z because of the sexy styling similar to the FRS but butt loads of more power. Plus it may not have a low center of gravity in comparison to the FRS but with suspension upgrades it can become a great car.

For me if I were you i would rule out the BRZ at least until they do a refresh on the model to get all the kinks out.

Who knows maybe wait around for the new Supra. But you did say you are in need of a car now.