Nice but I'm not sure I could get used to the colour.You already mentioned the prime watch within your budget - the Omega Seamaster. It was revised last year so is very fresh, or if you prefer the older 2012 model then check out used versions.
For me, I would get this used Omega Planet Ocean : https://www.watchfinder.co.uk/Omega/Planet Ocean/215.32.44.21.01.001/32444/item/125377