Matter of opinion. I'm a Kicker/Rockford Fosgate/JL Audio fan. Alpine is still pretty good too. Stay away from brands like Dual, MTX, Audiobahn, Sony, and pretty much anything else with a 'too good to be true' price tag.
Digital Designs Z series amps are the best brand because it can go into go into any car audio forum and has an authentic sound.
The Kicker ZX300.1 Subwoofer Car Amplifier is great.
Sony has the best car amplifier on the market. These are typically more expensive as well.
Depending on who you believe - this one was said to be best Krell KAV400xi 200Watts
The cost of car amplifiers is going to vary based on a number of things such as the brand, the car it will be going in, and what amplifier level is needed.
Behringer Europower EPQ2000 Power Amplifier is one of the best power amplifier that has high-quality components and ensures long life. It has several features and variable controls.
This is not a very good amp, a better brand is recommended.
Bose
Audi
You can mount your car amplifier in the back floor or in the trunk.
Many people swear that Pioneer makes the best brand.
Better at what. Be more specific as no brand is the best at everything.