A very good friend of mine used to work at the local shop. Now he is at a shop in the southern part of the state that deals Alpine. He said their amps, for the money, are not impressive at all. He said the JL amps they sell absolutely kill the alpine stuff. It is so bad, that they don't even stock alpine amps.
That being said, if you can get a great deal on one(alpine is available unauthorized just about everywhere online), then it may put out the power you need.
I have NOT used alpine amps, but this is coming from a very good friend of mine who sells the stuff. He certainly has no reason to lie to me about it. All of that being said, it is one person's opinion.