i would like to know if these brand of speakers are worth buying. looking for components 6 1/2". i will be getting an alpine MRP-F450 amp, I believe it runs 75w x 4 @ 4 ohm and 100w x 4 @ 2 ohm. Bridged I think it is 200w X 2. Any other suggestions on components would be great. They are going in a 2002 silverado ext. cab. I also need suggestions on 4 x 6 speakers too.