I had my stock alternator fry the other day on my way to the lake with my boat in tow. I had my kids with me and was 50 miles from home and 10 miles from the only parts store who could get me an alternator that day. It took 8 hours to get it, but at least they could.
Being "forced" to buy a new alternator was not in my best interest. I didn't have the foresight to have a better upgrade waiting in the back to be swapped at a moment's notice.
Problem: it's noisy. I can hear it at an idle from inside with the windows up or down. It appears to be working fine otherwise. The noise "goes away" (wind noise overtakes it) once I get some speed up...but I know it's still there, and it irritates me.
Has anybody else had similar issues with aftermarket "stock" alternators? I bought this one from O'Reilly...don't remember the brand off hand. It was a rebuilt unit...hecho en Mexico. It still cost me over 200 clams...so replacing it with an upgrade is pretty far down on my list right now.