Contrary to some posts here, I've got a Fortis Cosmonaut Automatic and I'm completely happy with it. It's built like a brick schiessehouse and has been completely reliable for the first 1 year+ I've owned it.
If you want a 'proper' watch rather than some overstated quartz tat I'd suggest looking at:
Damasko: OE to Eurofighter TPs, built like Darth Vader's jock strap and quite understated.
Sinn: Excellent German aviators' watches.
Glycine Combat series.
Omega Speedmaster Professional.
IWC Mk XV or XVI: Understated and so well made.