Well I've a copy of DS1 for the Box but it looks like the follow ups are worth picking up?
If you have not already played the
Atorias of the Abyss-DLC for
Dark Souls on console, you should delve into DS1 as well. The community patch unlocks the graphics options, which helps to reduce the number of instances with bad FPS counts (the only instances that remain are during some instant-kill boss attacks like Seath's Crystal Breath).
Atorias of the Abyss is some of the best content in the series, and some of hardest.
Atorias may not be the final boss of his own DLC however he is a THE Dark Souls-boss, distilled to 100% purity. If he doesn't infuriate you and then leaves you with a feeling of exhilaration when you finally beat him, you are doing Dark Souls wrong.
Dark Souls 2 and
Scholar of the First Sin are a different breed. vDS2 is mostly a purists choice as DS2-Scholar remixes some areas in NG, most noticeable
Heide's Tower of Flame which serves as alternate first area to the
Forest of Fallen Giants in vDS2.
But DS2-Scholar includes all DLC and a natural progressing into them (although the
Crowns-areas are still some of hardest in the game, expect a huge spike once you use one of the shrines) and the namesake ties it closer to the series as a whole (ask me about that sometime after I beat the DS3's
The Ringed City-DLC and I will do my best to lore-master

)