Which Polk speakers - the dx7 3 ways or the 2 ways? I'm thinking of buying 2 or 4 dx7s...

Do you like them? I'm looking for good mid and high end as I'll have a sub.

1999 Contour Sport
V6 5 Speed
Sony 7050
Polk dx7 5x7 (nice)
Sony 12" so-so sub (150w RMS)
Sony XM552 (140W RMS) amp