Kali Linux 2.0 or Kali Linux 1.1.0?

Guys i need your help. Guys i have two Kali linux iso 2.0 and 1.1.0. I want to dual boot kali linux with window 7. Which kali linux is more preferable to use? I made survey in internet about it found that kali linux 2.0 still have some bugs to be fixed.But does the bug can be fixed by update kali linux 2.0? Need your help guys..