That is a really good price for the Armada. Real low mileage also. It really sucks that everything here in California is more expensive. I saw an Armada close to my area and it is a 2018 RWD with 35k miles for sale at the price of 31k. It was rated excellent deal by CarGurus.We bought it a year ago with 18k miles for around $33k I believe.
I tried doing research on the 2011-2013 Infiniti QX56. I am not 100% certain, but I believe the engine and transmission are the same as the current Armadas and Titans. I found mixed opinions in my search. Half says very reliable like a tank and the other half advices to avoid it like German cars out of warranty. Those older QX56 are tempting also because there are a few of them for sale at the price of 13k, but the vehicles have 120k miles. It is so hard to make a definitive decision lol.that's what I read also. I imagine I won't have trouble than since our normal temps are over 90 from spring break till almost Christmas. we already had our "100 year snow" a few years back so now it should just be crappy drizzly rain during jan, feb, march, and part of april