These cams are awesome in the smaller sizes (yellow down to grey) however the largest two (green and black) have a stiff enough trigger action and a soft enough stem that they can collapse in your hand rather than cam down, particularly alarming when pumped and trying to get in that crucial placement so be warned. However, the stem isn't an issue with the smaller sizes and is really a pro as it prevents walking. The kevlar that attaches the cams to the trigger can be damaged if it rubs on a sharp edge. Overall I would recommend the 4 smallest units.

I use the Master cam to fill the requirement normally reserved for C3's or Aliens - I have yet to try Aliens but I certainly found they compared favourably to C3's. The four lobe design means they are slightly wider than C3's but the lobes are narrower so they fit well in smaller and thinner placements. The thumb loop makes for easy placements, though the trigger action is very stiff I haven't found this to be a problem - the loop is big enough to be used with gloves though the trigger is a little small if the gloves are bulky.

The great thing I have found about them is when they are placed they feel instantly 'bomber', rather than being a marginal or confidence piece these always feel like they are going to save you - having taken a few falls on the smaller units I can personally testify to their solidity. The sling is enormously strong and thick but quite short - I normally end up extending the unit with a longer runner - especially in deeper placements.

I was initially perturbed by the Kevlar trigger cords and was worried that they would be less durable or prone to wear - I have yet to see any appreciable damage or wear to date and am now more than happy with the assembly. The range-finder on the lobes seems like more of a gimmick than a useful function, while in theory it seems like a good idea I'm not sure how often people examine the lobes up close when placing the piece - useful to see the ideal range (it is slightly narrower on these cams) but in the field I've found little use for it.

Overall these are excellent cams for smaller ranges, the larger units are also excellent but they start to overlap in to the bottom range of C4's, Dragon's etc. and unless you have a requirement for a significantly narrower head profile you may be better served by other units. Definitely recommend.Review...