Alternatives to Resogun and Super Stardust Delta?

[Clypse]

Hello there,
on my PS Vita I love Super Stardust Delta. I also played Resogun on a friend's PS4 and found it to be really awesome.
Since I never got much into shoot 'em ups on the PC my question would be: What good alternatives to those PS games do I have here on Steam?
Thanks in advance for you recommendations!