The Final Fantasy X/X-2 HD Remaster launched on Steam yesterday and word is it's a mostly solid port. One key issue that remains though is the inability to use Japanese voice acting with English subtitles, an option that wasn't available in the original release and one that many fans would love to try this time around.
Fortunately, the mod scene has yet again come to the rescue: modder Topher has some downloads that will allow you to play the game this way, thanks to a bit of hex editing on his part. Head here to grab them and for installation instructions, which are pretty straightforward. Before doing anything, be sure to back up your original .EXEs.
If you'd rather wait for something a little cleaner that likely won't require you to rely on hex edits and .EXE file replacements, modder Kalaiden will have something out soon. Keep an eye on his work here.