If you go with a 4th gen, make darn sure it goes into 4wd and that it will go into low range. V-6 trucks have transfer case and front diff actuator issues on a few, as do the V-8 truck that are full time 4wd with the transfer case. The full time will not engage low, usually the transfer case actuator. And it is quite expensive to repair. And v8 requires timing belt change. v6 does not. Either one are super trucks, just make sure that 4wd works as it should.
And $11k seems just a little high on that. I own a 3rd gen and 4th gen. For 60k less miles and $6k less money Id have to really think about that 3rd gen. Our 97 is the trail camping truck, the 04 is the wifes driver.
To clarify, the 3rd gen 4Runner will require timing belt services.