Magnum heads worth the effort?

my take is that magnums crack easier
better chamber than x & take less timing
flow better
wedge chamber so better long term with pistons to match
should be slight gain
but not worth it unless your x heads need guides and seats- which they will
and you already have a set of magnums or can get cheap as as you can see there are other expenses
manifold, pushrods etc
otherwise you have been given lots of other opinions and options