HI Everybody, I used to string BG80 and I changed to use Ti68 for a few years. They are both 0.68mm in diameter. I found that the BG80 is a bit harder but the sound of the Ti68 is louder. I love the sound of Ti68 which is more metal feel. It seem that Ti68 give a more powerful smash. (But I am not sure..) I want to compare the both string, but I do not have two same type rackets, and also no machine to test the speed of the shuttlecock so I could not compare both string at the same time. Do anyone know, which string will give a more powerful smash? According to the yonex string chart, the Ti68 should provide a better control and bounce than BG80. But I wonder is that true? I am planning to try the NBG98, do you think it will be much better than the BG80 and Ti68? and give a more powerful smash? However, it is 0.66mm, so I fear that the durability will be very poor. I hope someone could give me some suggestion, Thank a lots, Jacky PS: Recently, I am studying in Japan, so the price of NBG98 is just similar to Ti68. So the price of the string is not a significant factor.