This list is just of what i've heard or owned so here we go.
Subs:
1. Boston acoustics (Great SQ)
2. Rockford Fosgate (2004-big SQ improvement over older)
3. Crossfire
4. Sony (Bang for buck)
5. JL Audio
Amps:
1. Rockford Fosgate
2. Crossfire
3. PPI
For amps i find anything past this is a toss up.
