All the powders I have tried have their good points. Goex BP is still a good choice for traditional sidehammer guns. Relatively inexpensive. Shoots well with conicals. Tends to be easier to ignite. Leaves a lot of black soot in the rifle - which comes out easily with hot soapy water.

The Pyrodex pellets, despite being expensive, work very well in conjunction with magnum sabot loads -develop good speed and good accuracy. If you don't shoot a lot and want maximum convenience, these are worth looking at. By mixing quantities of 50's and 30's, you can get a lot of different increments to fine tune loads. Loose Pyrodex is also an old standby. A little dirty, but not bad. Is more difficult to ignite than real BP, but this isn't much of an issue with today's inline guns.

Triple 7 burns pretty clean. Groups well. Can develop a "crud ring" in the newer closed breech guns, although there are certain primers that are better than others in this regard. It does seem to develop more heat and pressure than some other powders, and also seems to have more recoil at the same velocity. Particularly the 3F. I don't like it as well formagnum loads. The lack of black soot is kind of deceiving, though. The manufacturer says it is every bit as corrosive as regular black powder.

The new APP/Jim Shockey Gold shows a lot of promise. Lots of speed, very clean, and good accuracy. Recoil is less sharp than other powders. They say it burns cooler and with more of a sustained push. Also is alleged to be less corrosive than other BP substitutes - contains no sulphur. Great for magnum sabot loads. Many report not as good accuracy with conicals, though. I'm using this powder in 2006 - so far it's been pretty impressive.