I know a lot of guys on another muzzleloading forum use T7 at the range and the BH209 for hunting. Velocities are very similar. In fact from what I've seen, below 100 gr T7 is actually faster but with heavier charges BH209 has the edge.
The only thing I don't like about T7 is the crud ring. I found a 50/50 mix of blue Windex and 91% alcohol gets it out quickly. You still have to use short strokes on the patch until you get through it otherwise your patch may come off the ramrod.