The B777-300 scheduled on the SQ232 is the new-ish inclined lie-flat regional J, similar to what they have on the A330-300. However, the IFE is not exactly the same, and is a scaled-down version of what they have on the newer aircraft (B77W/A380/A345/A333) although it does have a sneakily similar interface. It does still have plenty of choices though - you just have to set your expectations right.
The B777-200ER (not -300) on the SQ242 has the Spacebeds (their previous intercontinental J product), which is inclined lie-flat as well.
It's going to be a comfy 7 or so hour ride to Singapore either way so I wouldn't worry too much if I were you. Just so you are aware, if you're intending to do a same-day connection to Paris, SQ242 won't make it in time so you'll need to go on SQ232.