helius

I'm looking to replace all four speakers for my 92 Camry, and am in the "looking stage" (The factory originals are becoming rather unbearable). After the horrendous experience I had with Circuit City installing my CD changer, I've basically decided to buy what I want from Crutchfield and install it myself. My questions are:

- What is the going price on decent speakers? I don't really need/want anything spectacular, just something that's "pretty decent".

- Would I be better off buying a "matching set", or does it not matter? i.e. two identical pairs for the front kickpanel and the rear deck?

- Speaker sizes. Over at Crutchfield's site they automatically filter out speakers that won't fit my vehicle, but the sizes on the remaining ones still vary quite a bit. Case in point: The Infinity Kappa 6.2i and 6.52i. Except for their physical dimensions, they both look identical from their specs. Is bigger better?