What is the best amp to use on one single Kicker L715" Solo Baric in a slotted box?

The Kicker is a dual voice coil (500watts) per coil, so it has a 1000 watt rms @ 4ohms, and it 2000 watts max. So what would be the best amp if possible I would like to stay with Kicker, or maybe Fosgate or Alpine. Please no Power Acoustics, or Pioneers. So what amp is the closet to 1000 watts at 4ohms for the sub?