I am not sure if this can be called a vintage, but... in regards to a 1996-97 Speedmaster, and transitional to Luminova, with Pic code: 3870.50 (it's the 3570.50 but with leather strap) tritium dial & reference: 145.0022 345.,0022 (serial 48.359.xxx) does anyone have an opinion as to which caliber would be better to have: the Caliber 861 or the 1861?

Appreciate your thoughts, folks.