I received a Chase Durer Blackhawk Mach 3 as a gift a few months ago. So far performance has been excellent as far as reliable timekeeping and durability go. I've only changed it at Daylight Saving Time changes, and doing a hack with a GPS or NTP synchronized time source always yields the correct time, as far as my eyes can discern. Chronograph and Tachymeter functions work nicely. The alarm is a bit difficult to set to a very specific time, but woks well for an analog wristwatch alarm. This model doesn't have the full-fledged E6B flight computer, but I'm not a pilot, so I don't really miss it.

The only thing I've found lacking is the "Tritium/SPO" illumination. This is not a gas-filled glowing vial, but a compound requiring activation from an outside light source. It does, however, last longer than standard "glow in the dark" compounds.

Hope this helps!
-Matt