I'd say what you said sounds just about like my perfect Doxa! :) I'd like a classic 42.7mm sized case, the thickness of the vintage models, and a titanium case (no He valve either). Titanium because it can wear harder than steel if it is treated, and it doesn't corrode like steel. I have an M31 but I'd welcome a classic sized Ti diver too. :)
*vintage model "chunckiness"
*no He valve
Essentially what I'm looking for is one made like Cussler's orange 300T that started it for me when he gave it to his hero Pitt to wear :) Just in titanium :D
Pic from Doxa website on the 300T with correct bracelet :D