I just got a new 4Runner *Life Goal Achieved*, so I'm not one to talk on those mileage specifics from an owners perspective, but I did a shit ton of research about this before my purchase and this is what I found:
-Both are fantastic vehicles and I would be confident in purchasing either with high miles IF there are not significant rust issues. I'm sure there are other specifics you can find in forums and facebook groups, but frame rust seems to be the biggest kick in the nuts as the engine and drivetrain can last significantly longer.
-Definitely find someone that knows what there doing to check out ANY vehicle before you purchase it. Luckily for you, there are a lot of older (elderly) honest sellers that have high miles, but great condition vehicles out there. I even checked out a few before pulling the trigger on something newer.
-I was 100% head first into a Tacoma before I actually drove one on multiple occasions (test drives and friends) when I decided that the interior is just TOO small for me both literally (I'm over 6') and figuratively(?) with a family of 3. Not sure if size is a consideration, but I just could not justify getting a small interior truck with only a 5' bed (I know you can get a 6', but I couldn't find any).
-From what I see on the forums and FB groups, buying the older high mile models with a V8 isn't a great idea when it comes to mechanical issues and gas mileage (assuming you're trying to save money). I'm not a mechanic, but I gotta throw that out there from what I've read.
-I'm glad I got the 4Runner, because I wasn't considering how helpful interior space is when transporting people and stuff associated with a family. Additionally, a quality/sturdy/locking bed cover is fairly expensive, so that would have sucked. I've used a Thule box for skiing and traveling on every vehicle I've owned and the box is more at home on the 4Runner than any vehicle I've had before (also supports more weight). When traveling with four adults and the box, I have MORE than enough room for everyone including gear. Boxes are also cheap AF on facebook marketplace right now, at least around me, and some are BARELY used.
I can't think of anything else off the top of my head, but there are tons of threads about this on different forums with facebook groups being a huge shit show, but also kinda helpful.
Again, cannot recommend enough to get a mechanic to check everything over before making a purchase. I helped a buddy buy a full size truck online and was shocked at the rust buckets with significant frame rust people are trying to pass off at high prices because of the interior or exterior appearance. He eventually found a ballin' GMC Yukon with less than 60k and almost no rust IN THE NORTH EAST for less than $10k.