As an aside, Phantasy Star 1 is honestly incredible.
I played all four games for the first time in 2007 and 1 instantly became one of my favorite RPGs ever. It really blows away its peers in every way.
To anyone who wants to experience now, I would recommend the retranslation. You get a much better English script, and you also get the FM music from the Japanese version which IMO is way better than the PSG North America got.
I played 1 and 2 right around then on the GBA collection and yeah, 1 really left a good impression with me. It's probably my favorite 8 bit RPG, and that's saying something considering how much I like DQ III and FF 1. I'd say it's about five years ahead of the RPG curve when it comes to presentation considering when it came out.
2 is fine, good storytelling mixed with awful dungeons. 3 which I played later is awful outside of some of the ideas it put forward. 4 is good but outside of macros and the combination system never really stuck with me, and this is a game I only completed last December.