Beezy: PS I is unlike the rest of the series- 1st person pov, yadda yadda. PS II is the hardest of the bunch, a real ball buster and my personal favorite in the series. PS III is the least of the bunch but there's still stuff to enjoy in the game. PS IV is pretty fuck awesome. I'd rate them PS II > PS IV > PS > PS III > seeing naked pictures of G > getting your balls caught in a blender > "Phantasy Star" Online.

Do you think I should try PSII? I have no problem with 2D graphics unless the sprites are some NES level shit.
Raoul is dead on with his rankings of the PS series.

I'd recommend you should start with PSI, as the series technically goes in order and references are made to previous games (especially so in 4)... go 1, 2, and then replay 4... you can skip 3 if you want, it's not bad but not great and doesn't stand up to the others. 1 is really tough at the outset, but quiets down in difficulty apart from some meandering mazes, and 2 is extremely difficult with some maddening dungeons (which I loved about it

) and an interesting storyline, some great twists.