i used many kinds of disc
1.D-star 700M so-so 1.3-1.5RMB (golden)
2.Traxlimit 700M good 1.3-1.5RMB (white)
3.All-seed700M bad1.5RMB (blue/golden)
4.SaveStar 650Mvery good1.3-1.5RMB (blue)
700M very bad1.3-1.6RMB (blue)
5.e club 700M terrible 1.6RMB (white)
6.smartRW 700M so-so1.8RMB ( white)
(zhuo mu niao)
7.videoKING 700M good 1.7RMB (black)
8.BenQ 700M good 2.0RMB (white)
9.Ablerex 700M very very very good 1.7RMB (white)
i usually not use the disc which price over 2.0RMB,because even some expensive disc have poor quality!!!and can not be rechanged.
by the way some disc can be rechanged if the manufacturer or the seller promised.besides its price is cheap!:)