Better in what sense? Regs is regs, pretty much anything will work fine as long as they're properly maintained and you keep gas density down within reasonable limits. Nothing wrong with Apeks. In practice what matters more is local availability of parts and service, and commonality with your dive buddies so that you can swap parts if you need a last minute spare.I'm currently using Apeks xtx40's wtih DS4's with my stage & deco cylinders, I'm wondering if there are better options?
That said, for stage regs I prefer turret firsts like the ScubaPro Mk25 because that reduces tension on the hose. While the turret theoretically introduces an extra failure point, in practice I've never had a failure in that part.