What is that mermaid gin like? As it happens I'm having a Martini myself tonight, though it's nothing special and the bartender made it.
I'm only familiar with Dolin when it comes to good dry vermouths. If you happen to be familiar with that one how would you compare the Grassi? I should probably branch out and try more, it was just the first good dry vermouth I tried that didn't motivate making the martini as dry as possible, like, say your Martini & Rossi.