pulleys.... worth it or not?

[slow98]

i am lookin into purchasing some pulleys, i have heard good and bad things about all different brands, i was curious what you guys have experienced with them, most recommend the steeda pulleys, which are about 50 bucks more that the others, i hear march makes a good product,bbk i havent heard to much about, what is you guys recomendation.... also i was wondering about the alternater pulley, will this give my car any problems charging? or will i have dim lights for the rest of my days...ive also heard stories of over heating... is this a common problem and is it associated with the water pump pulley? any help would be greatly appreciated .... thanks