Most manufacturers offer good 3D bows. First thing I'd look for is over 7 inch brace height and a longer axle to axle. Then I'd shoot them to see which I liked best. A lot of 3Ds limit the speed to 280 fps. which isn't hard to obtain with carbon arrows. The top shooters practice judging yardage as much as they practice shooting, so a laser rangefinder is nice to have.