Originally Posted by HVAC

The OP--which I recently learned means "Original Post"--said "I'm asking which solution you like for Acuvue Oasys - Aquify or Replenish?" That sounds like an opinion question. Frodo didn't ask "which is the best?" he/she just asked "which one do you like?"
Someone could have answered with "I like the one with the pretty blue box" and that would have answered Frodo's question just as well without necessarily having to trot out the staining grid. If you like Aquify to clean your Acuvue Oasys and you want to use the staining grid to explain why that would be okay, too.