Components and subs are great, amps I'm not as experienced with. They have a very distinct sound to them, some people love them, some hate them, I personally find some to be a tad bright for my taste. It's all in your opinion in the end, listen to them and evaluate your own opinion.
I will say there subs and components match up very well. I used the pro series in my S10 and I loved it. I have even heard some great things about the g5 series subs, but I haven't messed with or heard much about their amps.