I've been using the standalone for well over a year, but I'm wanting to be able to take advantage of the shaders that RetroArch lets you use compared to mGBA. In terms of accuracy, how does the Libretro core stack up to the standalone version on mGBA?
It's using the 0.6 branch at the moment so it has most but not all of the accuracy fixes.
So what would your recommendation be? Is it worth the slight accuracy drop to use the core?
You'll have to judge that for yourself. I don't like shaders in general so I can't judge the value you glean from them.