Looking for 4 4" speakers, sub, and headunit. What brand?

[BlueHUMMERH2]

I know nothing about car audio. Zip. Zilch. Nada.

So in looking for speakers to replace those in the H1, I don't even know where to begin. Here's what my uneducated thoughts are:

1. Look for speakers with high watt capability. The ones in there are 45W, so I should probably find something similar.

2. Boston Acoustics, Inifinity, Alpine, Pinoneer--All good names.

3. If I get a suffciently nice headunit, I won't need to buy any amps (and save myself a couple bucks).


Any corrections for advice? I've been looking at Memphis Audio as well, but not really sure about them.

Thanks.