On my rack, I currently use Aliens up to the red, and Metolius Power cams from orange to purple. The weight savings is amazing, compared to Black Diamond camalots, which is what I used to use, especially in the bigger sizes. They are stable, beefy looking (which inspires confidence), and LIGHT.
Great cams.

Well, I have had some of these on my rack for a bit, and truth be told, they do not hold up in the long run. Granted I am hard on gear. From April 15th to Dec 1st I am usually climbing and guiding 5 days a week, and I love hard trad. I take alot of falls on my gear, and after 1 or 2 falls most of my ultralights have become tweaked, bent and lobes abused to the point where the cam isn't quite that functional anymore. My camalots seem to hold up to the abuse WAY better. Yes these units are lighter, but in my mind it is not worth it when you are spending this much money. Also sizes larger than green tend to walk a fair bit in cracks. Just my 2 cents

These have slowly become my cams of choice. I love that they don't weigh much and I love even more that when they're placed properly you could drop a truck on them. They're total confidence builders and let you spend more time climbing and less time worrying.
The other review referring to a non-constant cam angle isn't correct. These have a constant cam angle that is slightly smaller than other manufacturers', means that you sacrifice a little range for more bite.

I have the smaller ones through #5 and love them, but above that I hate them. The #6 is floppy and I don't like how the others feel. I think its the U stem on big cams I don't like. 4 stars because the small sizes are awesome, but the big ones aren't.

These are very durable and trusty cams. I have a handful as seconds to my C4s. I really like these in the smaller sizes where the c4S don't have as much as an advantage.

These cams don't seem to place as easily as Black Diamond C4s. The C4s are longer and can reach further into a crack which can allow for more placement options. They are adequate cams but I find them a little too short.

I like Metolius quality and design. These feel solid in my hands and in the rock. I have spoken with Metolius persons on the phone and was also impressed with their customer relations! I will continue to buy Metolius for years to come.

Like everyone else has said, these buggers are awesome. Amazingly solid construction, assembled in the USA, and now lighter than ever. I've found the sizes up to 6 (green) to be the best for my rack. These things are fantastic (I think the best on the market currently) for small stuff. I always find myself using the 1, 2, 3, 4, and 5. Get yourself a set!

best cams you can buy. period. great quality. they weigh lighter than a feather.

I love metolius products. They always seem to work really well. The power cams are amazingly light and easy to use. A word of caution: the smaller sizes set really well, but the larger ones have a tendency to walk more than BD or WC equivalents.

The single axle, narrow cam angle and the powerful design makes these cams stronger, and more powerful than anything else around. I recently took several 20+ foot whippers on these and had no problem with slippage or retrieving them afterward. I prefer to use the range finder as a guide. I like to place them on the green-yellow line. That way you can avoid the lobes getting stuck and as I have proven, you still have plenty of power!

light, impeccably made, excellent workmanship/strength EXCEPT- as gear becomes more specialized, so must the user. Since these have a changing cam angle, they tend to be awful in flared pockets at the green/smallest end of the retraction zone, and as they wear in the green zone, become closer to a zero degree cam angle, which is useless. I use the orange zone to near red zone the most... and on the midrange sizes, they retract until the cam tips touch the opposite crack walls, and get stuck. Yuck.