Just get one with a warranty (Lifetime or better, ha ha).
They all will fail, I do however recomend Napa. And above all avoid rewound alts as they are expensive, carry short warranties and are prone to over-heating and cooking themselves. I if you want bigger amps i would recomend the a chevy CS130 series they can be had with a very similar body size and mounting patern. (Same bolts as stock Toyota, thread pitch and everything)
R.S.
