My apologies if someone has posted this comparison already.
Ridata 16x +R @16x: 91%
Fujifilm 8x +R @16x : 93%
Ridata 16x +R @12x : 96%
Fujifilm 8x +R @12x : 98%
Regular price of Ridata 16x +R : $15CAD for 25 (60cents each)
Sales price of Fujiflm 8x +R : $25 CAD for 50 (50cents each). Regular price is $1.00 each.
So, Ridata 16x +R is not bad when Fujifil is not on 50% sale.