I like the Speer BTSP. And like mathman said, they are indeed soft. They work well, though, particularly if you match weight and velocity with application. They can be a bit frangible at higher impact speed, but still kill well.
Examples: the .243" 100gr version started at 3100 fps fragments quite a bit on broadside deer at close range, but it has always killed quickly, often without exiting. Better at 200 yards and beyond as far as exits.
The 30 cal 180 BTSP from a 30-06 started at 2700 fps is a great longer shot bullet, exiting a broadside elk and leaving a 2" hole from 450 yards. Shot a doe at nearly the same range, in exactly the same spot, with exactly the same result.
