Omega Pacific Link Cam
Price Paid: $80
The larger (gold) LinkCam has quickly become an indispensable piece on my rack. Its range runs from all of .75, #1 & #2 Camalot as well as much of a .5; while heavy for a single cam, it weighs less than any of those two combined.
It's absolutely the ticket on pitches where you need a few pieces from a wide range of sizes. Rather than doubling up on all sizes, take one of each and a LinkCam. Note: save the LinkCam to you have to use it.
It's a great desperation piece, in hard to hang on, hard to gauge the size situations.
It's a superior piece for blind placements as its large range makes it much more likely to be securely placed in such situations.
Disadvantages: heavy, expensive and has a lot of working parts and thus could be relatively fragile, though I've encountered no such problems.
Note: the smaller size (red) does not seem nearly as worthwhile as the larger as it covers a considerably smaller range.
Wish list: A larger size?