best amplifiers

To put it short I'm sort of a newbie , and I'm seeing throughout the forums that the best of brands are soundquebed, digital designs, ampere, sundown, crescendo. So my question is what is the best amp with the most power I can get for around $1000. It's going in the trunk of a 2007 caddilac dts...

Just listed my amps in the Classifieds: Thank you!