Vortex spitfire 5X seems to be the best one for me.
And not sure what people mean by not very accurate, because I hit 3 inch groupings at 300. Pretty impressive for a bullpup imo.
I'm with you on this. I have no problem with this gun and shooting amazing groups. The twist in the barrel does like heavier grain bullets which I have noticed. But I am very pleased with the accuracy of them