Voltage Regulator Choices

Hey FABO,

I'm in the market for a new voltage regulator.

It seems there are a number of options, all at a different price point.
Can anyone offer some sound advice on the differences (other than Made in China vs USA) on these units. Some are $15, some are $80.

Here's some units listed on Amazon, just for reference to the different prices.

I need this for a 1968 318LA motor, 4 speed trans, 100A alternator, after market stereo, Holley Sniper EFI.

Thanks for any replies.