I'm with you Al, in my head the Bettarini Case only works in Titanium and Tantalium. The darker hue of the metals and the brushed surface let you see all the shades and radiuses of the case.
My first love was the PAM 176 and on my way to it the PAM 177 became my first Panerai. Developing my collection the last years one year I was without a Bettarini Case
and had only 47 mm Panerais. But no good collection without a titanium Bettarini 44 mm, I added the two (for me) perfect ones (as replacement for 176 and 177) to the
other 47 mm Cases -> PAM 116 and PAM 036B. But I must admit with 368, 305, 341 along the others I can't deny my desire for Titanium