The only real benefit in buying 5 years old basic TX Prado is comfortable seats and soft suspension.
If one can't afford Prado TZ, then Fortuner is an overall a better deal as its brand new with warranty and cheaper spare parts. I would not have said this before as I am a big Prado fan. But since IMC offered VSC, TRC and push start, now its a fair deal when compared with old TX Prado as its too basic and doesn't even have powered seats.
That said, uncomfortable seats in Fortuner is still a big turnoff for me. You expect comfort in SUV which is lacking big time in Fortuner.