well it depends on your budget.
if you are short on cash but still want something that sounds great try these.
http://caraudiozone.woofersetc.com/s...f?item_ID=2550
Infinity Kappa 62.3i 6.5 2way $97.99
and these
http://caraudiozone.woofersetc.com/s...f?item_ID=2552
Infinity Kappa 692.3i 6x9 2way $129.99
or if you have some bucks try these
http://www.bostonacoustics.com/Produ...=4&SeriesID=20
Boston Acoustics Pro-Series 6.5 System list 450.00
and these
http://www.mbquart.com/Mobile_detail.asp?model=DTC+169
MBQuart DTC 169 6x9 Coaxial 3 way list 299.99