Wastegate Sizing

[turbotalon1g]

Ok folks, i have been busting my brain with searches and reading on this, what are your experiences/research show.

So far i have seen that if you are going to use a big turbo and run high boost you can use a small wastegate, but if you are using a low backpressure turbo with plenty of airflow you will want the biggest wastegate that you can fit on there.

Please help

Thanks
Aaron