I have seen these length pool tables (ft) mentioned here and there... 6, 6.5, 7, 8, 8.5, 9, 10. I didn't know there was such a thing as a 6 ft table but there is and now I just saw there is 6.5? What is commonly barbox size, 6.5 or 7? If it is 7, are 6.5 ft tables pretty easy to find? (My...