Well, I've only done it one way...but it works and I'm happy with the results!
I use a Bazooka T-Screen in my boil kettle to strain out the hops. I have a weldless ball valve kit that connects to the screen with a copper dip tube, which I made myself. You can also buy the entire kit if you'd rather not build it. Don't laugh at my soldering job...it was my first time

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Many weldless fittings and screens here:
NORTHERN BREWER: Weldless Fittings
I also built myself a counter flow chiller, which works great. No chilling first, then racking. Cost me about $55 in parts. I made two and split the cost with a fellow brewer.
Later I added a pump to the mix, which really made this setup killer. However, in a gravity system the chiller works just as well and the flow is decent. If you're looking for a deal on weldless fittings, you really can't beat this place:
Bargain Fittings
Great prices, and the shipping is usually pretty quick. Hope this helps!