Looking to get a spare set of knives for my Powermatic 54A.

While looking at such sites as Infinity and others, I noticed that
they offer knives that as long as the standard knives but
are bit thicker (not by much) and wider. Has anyone used
these replacement knives and what "problems" if any can
I expect.

I was thinking of going full boat - carbide tipped or full carbide.

Thanks,

MJ