I've had a Darien jacket and pants for a couple of years and about 60K miles. I can't say enough about the quality, versatility, or great customer service. It has help me weather torrential downpours, tornado winds, and although it gets a bit warm here in the desert above 90'F I find it cooler than jeans and a mesh jacket, especially if traffic is moving and there is some airflow through the vents. Some Roadcrafter wearers complain of water leaks in the crotch, but the Darien pants have a different zipper arrangement and I've never had a problem.
On a recent camping trip I forgot my Thermarest pad. The Darien worked so good as a substitute I may leave the pad at home permanently.
If I had it to do again, or when I do, I will 1> get the 'new' grey color as the old (discontinued) grey was in fact more of a muted green; and 2> upgrade to the electric liner. The standard liner is fine and quite serviceable, looks good as a stand alone jacket, etc., but the electric eliminates the need for other electric garment. The electric liner doesn't have a quick hook up for electrc gloves which was a concern to me, but one I would make now and just deal with separate glove wires.
Road Gear (RoadGear.com) make a copy, not made in the USA, that is priced quite a bit under the 'Stitch if you're price sensitive. My wife recently bought a pair of their overpants at a rally, and they look to be a good product, but time will tell about quality and durability.
