Repeat: Get a reman alternator with a lifetime warranty.
Better yet, for about what you're going to pay for a Toyota reman you should just buy two of the indie auto parts store units...and have one for back up.
If you research remain starters, alternators, etc., they just replace the parts that don't pass inspection on the bench at the time of the reman. Bearings are one of the items that usually get renewed but no telling how much grease is actually in them, etc.
IMHO if you think you are getting higher quality reman starter or alternator from the Toyota parts counter you are mistaken. Other than the virgin alternator that came with my 100 subsequent reman units, including "Toyota" reman, haven't lasted very long. The Toyota reman alternator lasted the fewest # of months/miles @ under 24-months...just outside the 1-year warranty. The current O'Reilly unit is just past its 3rd year since I installed it.
FWIW/FYI: Most of my alt issues are primiarily because of its low hanging position on the motor and water crossings. And it doesn't take much of a water crossing to splash the alternator.
One last tip: Before you leave whatever parts supplier's counter with alternator/starter in hand, new or especially reman, have them bench test it to be sure its operational. You'd be surprised at the return rate...for non working reman alts/starters.