http://www.outdoorreview.com/defaultcrx.aspx
Is an excellent place to find reviews of camping products.
Also, I don’t think www.sierratradingpost.com has been mentioned yet.
My camping gear consists of:
ArcTeryx internal frame pack (sort of towards the upper-end, but if you look around, you can find a good deal. A bad pack will make you hate backpacking pretty quickly - like within the first 3 miles). Gregory and Mountainsmith also have excellent reputations for backpacks.
Zamberlan Gore-Tex boots (whether you need Gore-Tex depends on the areas you intend to hike in. I wouldn’t trade these boots for anything. They have nice, stiff soles which keep your feet from getting fatigued, and I can walk in 6" of water without getting my feet damp). They’re also tall and stiff enough to prevent rolled ankles when hiking over boulders, downed wood, etc.
Outdoor Research sombrero - a good foldable hat is a must for both sun and rain.
Kelty or Sierra Design tents can usually be had for a decent price. I have the Flashlight, which is a tight fit for 2 people, but weighs in at about 5 pounds.
Moonstone Gore-Tex raincoat - breathable, good quality jacket - on the spendy side unless you watch for bargains.
North Face down 10-degree mummy bag. Nice and toasty, just over 2 pounds, IIRC. Lighter bags will result in less wiggle room, so it’s important to stike a balance.
Sleeping pad - ThermaRest - there is no other. These are foam, and inflate to hold some air, so they are excellent for padding and insulation given their weight and packed size. The 3/4 length is ideal for backpacking.