Which is the best alternators?

im looking for a brand new alternator ppl.is ultima a good alternator?bosch alternator?best brand alternators?or is it best to get a new alternator from the dealer?the one i got that comes with my 2000 plymouth breeze 2.4 liter engine is denso 90 amp alternator.manufacture number 121000-3510.oem number 4609415.hope this helps.thanks ppl.