I'm getting a HEP treatment on my grail Cirqus Voltaire only because I'm sure this is the one pin I want to keep for a lifetime. Really expensive but worth it for lifetime keepers.
Honestly, at this point I don't know if I can justify any other pin given such an extreme money draining treatment. I was a little naive earlier on thinking I would do HEPs for a slew of my favorite Bally Williams pins. But its just too much money and you lose a lot if you play to sell them later on.