I got Breath of Fire IV on my 12th birthday for PS1. Nearly 25 years later, this game remains the pinnacle of polished, refined Capcom pixel art. The sprites and animation are masterclass. The game's story is really engaging and has you playing as both the hero and anti-hero as you progress. The combat is some of the Breath of Fire series' finest, allowing you to swap characters in and out during battle (well before Final Fantasy X did it!). There's also a lot of polish with the game's Master System, Fishing minigame, and Faerie Colony; all improved over III's. The robot character Ershin also remains one of the best characters in the series! And how can I forget the game's incredible soundtrack by Yoshino Aoki? It's a wonderful melding of orchestral, folk, and world music.
The only knocks I have against the PC version are the forced bilinear filtering on the character sprites, certain resolutions stretching the aspect ratio, battle transition swirls being cut short, audio sounding richer on PS1, music not looping correctly, and the text font not looking as good as the PS1 original. Otherwise it's still very much the BoFIV fans have grown up and fell in love with! Hopefully GOG can give a re-release of this one its proper due and fix those aforementioned issues.