Mate I would strongly suggest components, I currently have CDT components running off a mission amp and good lord it's literally like the band playing are on your dashboard, you can hear every little sound they are absolutly amazing and I aint exagerating (SP)
I've had infinity speakers with additional tweeter and to be honest mate they didn't sound too great, the main reason is because they don't go through a crossover there will always be a slight delay in the sound, you may not notice that there is a delay vut you may notice that it sounds a bit weird and won't be able to put your finger on what it is that is causing the it to sound like that but that is what it is. The tweeter only a has a bass blocker in the wire which some may say also cause a very slight delay.
But all in all the price you have paid and what your getting for so little money is quite well done.