Ok guys it has been noted on more than one occasion that power acoustik amps will not do rated power. Anyone that conducts a search on this forum will find this to be true. However, if you slap one of the amps he is referring to on an SI BM, I guarantee it is going to make quite a bit of sound and who knows, he could be like me and hand people their ***** that are running RF, Sundown, kicker, or any other "high-end" amplifiers.
It's never good to judge a book by it's price tag. I've run Power Acoustik "crap" for years and anyone that has sat in my car will tell you that hearing is definitely believing.
To the original poster, I think either amp will perform great for you.