A good target bow is different than what hunters and 3D guys may want.

1) Merlin Supernova
Then in no real order:
- Merlin Max2000
- Martin Septer2 (soon to be 3 as Sag pointed out)
- Bowman Accuriser
- Hoyt Protec
- Martin MV2
- Redman
- PSE Mach 11

There are many older model bows that are great too for target shooting.