[WADS56]

This depends what you want out of your motor. Are you going to run a blower, or nitrous in the future? Is cost a factor? I like Hypers for a street motor. They are cheaper, and run tighter in the bore and can take a small poweradder if wanted.
Nothing but forged for me in a rece motor. They are stronger and you can add a big poweradder with them. The downsides are the cost, they have to run looser in the bore to make up for the expansion rate, some people get piston slap on a cold motor depending on the alloy of the pistons.