Look into the fks 155. They're discontinued, but you can find them used all over the place. They have the same bombproof all metal construction that the fks 180/185 has (as opposed to the plastic toe of the 140), but with a 6-15 din, which is a lot more friendly for lighter/less chargey users. You can also find them for around $150, and save 100 bucks for lift tickets or whatever.
"What you are feeling is a base burn. The toilet bowl cleaner probably has a really high pH , and therefore must be neutralized with an acid that has a really low pH. So basically, you just need to stuff your asshole with the most acidic shit you can find, battery acid, sulfuric acid, nitric acid, whatever you can get your hands on. its gonna be a chemical showdown in your asshole today my friend."