Hey I'm trying to decide between the 6.5" Infinity Kappa 62.5i (2 way) and 63.5i (3 way) speakers. How big is the diff between the two and is it worth the extra ~$25 for the 3 ways? I mainly listen to rock and rap so I definitely want good bass but vocals are important too. Which would you guys recommend? They'll be running off the head unit at 1st but I'm lookin at gettin an amp not too far down the line. Any help is appreciated thanx.