For me, it's:

1. Dragon Quest V: A game with an awesome story, multiple outcomes (you chose your own bride), monster catching, and an AMAZING soundtrack.

2. Final Fantasy VI: Quite possibly my favorite Final Fantasy for it's amazing music, graphics, Esper system, story, and characters.

3. EarthBound/MOTHER 2: While this is my least favorite of the MOTHER series (my favorite series of all time!!), it's still TONS of fun. Quirky characters (who could forget Mr. Saturn?), nice story, AWESOME music, and overall just fun to play.

4. Dragon Quest VI: I really enjoy this entry of Dragon Quest for it's unique job system (I feel the job system is better than FFV's!). You master jobs, and keep everything you learned when you switch to a different job (and get special jobs too!). For example, master Cleric and Mage, unlock Sage. Or, you could different jobs to combine random skills (not limited, like FFV's), such as Warrior, Martial Artist, Monster Trainer, and Dancer. The job system alone makes this game a blast to play.

5. Tales of Phantasia: This game is..so detailed! Everything looks beautiful, though the music is average, and the gameplay is REALLY fun. Filled with likable characters, a cool story, and the linear motion battle system, this game is enjoyable every time.

That's my opinion.