I recommand to play the original ones (more optimized, works very well in VR, you even have 6dof in Bioshock 2).
Bioshock 2 original is more beautiful (especially in VR because of relief) with hidden options (better dynamic lighting, etc.) and has more atmosphere anyway. It has a better physics (spear gun doesn’t have any effect in Remasted and feels censored) and also more soundtrack :
http://www.vorpx.com/forums/topic/bioshock-2-fixed-crash/
You can easily get max FPS with better graphics and experience.
VorpX enhances original textures anyway (ClarityFX, Sharpness and Texture Enhancement filters are very effective). Original textures are often more details (dirt on the glass, etc)
Bioshock 1 original has a great mod (Silver’s mod) and so has a better gameplay and is more balanced, especially at end game. I never liked some of the changes they made in the Remastered anyway (for example, the giant kelp makes the city tiny at the beginning).
Bioshock 2 original difficulty can be manually edited too and it can be really great to replay the game.