Stereo? Go local. Lighting? Depends on what you want.
I run IPF headlights with Fat Boy bulbs and IPF 968 driving lights on both my jeeps. There is more than enough light to illuminate anything you want. You can get good prices from Dirk at DPGOFFROAD.com
Yes, crutchfield is great for car audio. You can call them and talk to someone or even chat online and ask questions. Also, I just bought speakers at Bestbuy on sale (not sure if it's local or not) Infinity speakers are buy one pair at reg. price and get the second pair @ 50% off. If you are upgrading all 4 speakers you could save a few bucks.
Fry's electronics has good prices and their return policies are good. You just better know what you are looking for. Trying to find someone to help you that actually knows about the products can be difficult.
A forum community dedicated to Jeep Wrangler owners and enthusiasts. Come join the discussion about reviews, performance, trail riding, gear, suspension, tires, classifieds, troubleshooting, maintenance, for all JL, JT, JK, TJ, YJ, and CJ models!