A little bit of both, in Florida, but mostly Catholics moving South. Many Catholics with disposable incomes are active and give generously while many young families, Anglo- and Latino, are joining parishes, getting involved because they like what they see. Parishes I visited in Orlando, Naples and Tampa are booming. Are there many converts? Some. Higher than in the East. The real challenge for ALL Christian Churches, however, is attracting the non-affiliates. Churches are great at "sheep hustling" from each other, whether intentionally (as among some evangelical churches) or unintentionally; but US Christianity in general still stays the same low percentage -- 70%, especially with Southern Baptists reporting continual declines. I personally think Catholicism benefits from a heavily evangelical population owing to the latter's active church participation and financial commitment to their churches. Catholics mimic them, as it were. But evangelicals are declining in many parts. Not good.