which are better?

Pioneer: http://www.crutchfield.com/App/Produ...TSG1642&tp=105

Alpine: http://www.crutchfield.com/App/Produ...SPS17C2&tp=105

Infinity: http://www.crutchfield.com/App/Produ...086022I&tp=105

Kappas: http://www.crutchfield.com/App/Produ...108627I&tp=105

what are better and what are the best bang for the buck?

i am going to run them though this amp:
http://www.crutchfield.com/App/Produ...=detailed_info

 

i personally in my z have 6.5 infinitys all around wired directly to my deck.
i would have preferend the kappas but i got the 6022i speakers for like 40 bucks for all four.
by the way the 6022i's are great and i blast my music with my windows down and they are still loud and sound great so they should be ok for you
the kappas i know will be better but more expensive.
i dont believe you will need an amp for either the 6022i's or the kappas. if you use and amp be careful not to over drive them