Matrices run at much lower pressure, and less bolt pressure, so less chops if any. They are also grossly inefficient - stock matrix goes about 500 shots from a 68ci 3k. It does have a slightly higher profile, but not by much. It is A LOT cheaper than an Angel.
And the angel is just sweet, except for the larger possibility to chop. But then again you can always get that new free flow mod (damn, more money!?) to reduce the pressure...
Other than that, the matrix is almost the same as an angel.
Hope it helps.