Man, it always amazes me how behind people are on this stuff outside the core community.
The playstation ports of the Square-Enix RPGs are trash, and far better versions of the games were released on GBA, DS and PSP over the years. For instance, most fans consider FF5 Advance the definitive English release for various reasons, while the PS1 version has a laughable translation and really bad load times. FF4 is more complicated since the remakes and ports are so numerous, but it's a sure thing that between the GBA release, PSP update, and DS remake you will find a better port of the game than the FF Chronicles one. Sadly, since Japan hates FF6, the only decent update to it has been the GBA port, which has a butchered soundtrack (fixable with mods, to be fair). As for Chrono Trigger, the DS version of it has all the new cutscenes, no load times, an improved translation, and bonus dungeons. It's also easy to find, and the 3DS is a current system so it's easy to play too.