Experience as your experience is always based out of a system (or anti-system) of everything, a system which is mostly implicit and is defined loosely by certain parameters. Philosophy is the attempt to make it explicit and to disinter the core parameters as required by the particular choice of most encompassing reality. You might consider the degree to which everything is relational, including the apparent entities that are related, or whether at some point there are ineluctable reals, say pure impressions. Some theories present as purely relational in order to shelter non-relational elements, to protect them from dissolution. It is not about which view is true and which false, since these valences are already defined within the system. It is more as if the choice is for a style of architecture and what that in turn makes possible. In any case the meta-theory is formed inside the theory; that being what it means for a system to be a system of everything. That is an inherently paradoxical situation and much depends on how you treat the paradox; it is the limit of relationality which otherwise would seem all too easily to undermine all boundaries.