I bit the bullet and picked one up today.
The specs meet the needs of the Star 0.8mm gun. So hopefully all will work well.

I had a bit of a play (no spraying though!) and it seemed to work well. I will need to learn how to use it correctly. Though I think I'm more worried about cleaning the gun after use.

BTW, the salesperson did try to sell me the best of the best (for unlimited budgets!) so as to meet all spraying needs. But I held firm.