I have 2005 ALPINE SPR-17LS 6.5" component speakers in my Ion. They are very good speakers for the money. They have very smooth tonality and are very easy to listen to.
With 33 watts RMS from my Panasonic class-T powered head unit, the speakers light up quite well. The midbass drivers are very tight and snappy, while the tweeters offer exceptionally smooth highs.
I highly recommend Alpine Type-R speakers to anyone, they will not dissapoint for the price.