next question, alternators

[bigblock73]

Next up to buy is my alternator. Wondering what would be the best alternator (brand too) for my truck. I have always just purchased standard alternators in the past for my drivers, so I really don't know much about the rest. What is the big deal about one wire alternators, are they any better than your typical alternators? Should I buy a standard 60 amp (I think that is standard), or get a 100 or 140 unit? My truck is going to be pretty simple, with a very mild stereo, single battery (Optima), and no elec fans (for now) and so forth.

Looking for advice, and curious to hear what everyone else is running.