Get Omega Speedmaster Reduced 3510.50.00 UK. They're great except the movement uses the dd piggyback chrono module which can be pricey to service. The movement is housed in a stainless steel case that is attached to a matching stainless steel bracelet that fastens to the wrist with a deployment.
Omega speedmaster reduced 3510.50.00 watch and box only.
The later 3539.50.00 speedmaster is the one to look for. Cleaner dial, sapphire crystal and much improved bracelet. A 3510.50.00 for my 6 wrist. Omega speedmaster reduced 3510.50.00 39mm crazy condition mint.