I'm no expert but I really like my vintage EXP I. The older ones have a slower beat than the modern ones so it actually makes an Asian mov't a more accurate rep
I had mine relumed and installed a rivet bracelet. It makes a greal little beater with a real "no-nonsense military" vibe
I just wanted to add that the rivet bracelet from Silix has solid center links which, while not as accurate, make the watch feel more substantial.