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.