kbt is 9/10 condition and k6.1 is 8/10. i rated it 7.5/10 before but after my roomate looked at it he said 8/10 and said kbt was 9.5/10. kbt is mine and selling k6.1 for a friend. email me at email@example.com if interested. building up my reference rep so far have 1 reference as seller and should have another one soon as another transaction went smoothly selling a n6.1 95.