I have those Alpines. Great bang for your buck speakers. The tweeters give a nice warm sound, but the midbass is pretty soft. If you're looking between those two, it should be a pretty easy choice based on the tweeters. The focals give a bright, possibly harsh sound. The alpines give a laid back, warm sound.
I ran a Cerwin Vega Vega 6.5 component set off my Eclipse deck for a while back in 2000 before my amp came in. Sounded great but at higher volumes you could tell it wanted more power.