Originally Posted by BTM87

I wouldn't look at ONLY saving weight. I would look for a strong, durable rim (of your choice, the pro/cons of al/carbon have been beaten to death), with a good hub, and a spoke count to support your weight. You will probably end up saving weight (though probably not 400g) but will mainly end up with a good wheel suited to how you use your bike, not a cheap of the shelf "solution" that is really just a big compromise