Pentax K5 11 or Pentax K5 11s

Hello. I am moving over to Pentax as I believe dollar for dollar the product is excellent. I am not a professional and do not use a studio. I shoot a lot of photos but generally am described as an advanced enthusiast. Question Pentax K5 11 or Pentax K511s. I appreciate deep resolution but giving up distortion or other distractions may not be smart for my use. I am leaning to just the Pentax K5 11 as likely I will get the photo quality I can accept but would hate to miss out if the K5 11s is just that much a better choice. Forum input appreciated.