Contour Enthusiasts Group Archives Forums Modifications Audio Brand ranking for amps, subs.

Subs:
1. Digital Designs
2. Adire Audio
3. Resonant Engineering
4. Eclipse
5. Focal

Amps:
1. MacIntosh
2. Audison
3. Zapco
4. USAmps
5. US Acoustics

Those are just if you have lots and lots of money to go and blow.
As for budget goes:

Subs:
1. Adire Audio
2. Powerbass
3. Kicker
4. Cadence
5. Infinity

Amps:
1. Hifonics
2. Lanzar
3. Profile
4. Alpine
5. Rockford Fosgate