Rotated turbo or twin scroll setup
 

im looking at building a 2.1 cdb with avcs heads, cammed and I'm aiming for 450-500bhp on v-power but I'm unsure what the best turbo option or route to go down would be

What would be better

A twin scroll setup running a sc46 or an equivalent turbo

Or going for a gt3076r turbo with external wastegate and screamer pipe?

What would be the best for power/torque don't want a laggy turbo either

What would be people go for if they had the chance?