I'm thinkin that for a little more, you can switch to a mild street roller set-up and have the advantage of more power, without having to worry about cam break-in, lobe failure, or running special, high priced oil. It seems to me that the whole idea of using a flat tappet cam is the price. But when just the cam costs $250-$300, why not spend a little more and go roller ?

But again, that's just my opinion. And as we know, opinions differ.