Hi guys, im bit confuse to choose better opk for accurate n realiable.. Wat is different between opk clearblue (rm100+ for 10 pcs) n opk the strip one n very cheap (rm10+ for 10pcs).. Wic is more accurate can detect actual ovulation.. Coz im trying to conceive for baby boy.. I already have girl.. I heard some peiple tell make love on ovulation day for conceive baby boy.. So pls help to clear my doubt... Tq