I have a Trophy Ridge Micro Matrix I bought off Ebay as well. This is the first quality hunting sight I have ever owned and I must say that so far, I am impressed.

The Micro Matrix has the 0.19 diameter fiber optics instead of the 0.29 diameter. I really like the smaller pins and they are brighter than my old large pins. The sight is easy to adjust with the thumb screws and in the center of each thumb screw is an allen wrench type bolt to really hold them in place. This feature is great after you get everything adjusted and are going in the field where the sight may get bumped.

Also, the Trophy Ridge Matrix series of sights have the VPIN or vertical pin technology. This took a little getting used to, but I must say that it is easier to use and offeres a less obstructed view than my old horizontal sight.

The only disappointment is that for the price, I would have liked the sight to be metal. The pins are metal, and the sight has held up well, but for hunting, metal really is better. Oh well... I didn't pay full price so I'm a very happy camper!

On a side note, this is the first sight I've ever had with a level and man... I wasn't holding my bow straight! Makes a big difference! Overall, I like mine.