I have an Avia from Argos too (!) which I use at night, as it has a light (something most of the £1000's of pounds watches seem to have forgotten about!) and I can leave it permanently set to UTC. Not very accurate, though - gains about 5secs a month.
I mostly wear a Citizen Eco-Drive Skyhawk, since I like (a) the rechargeable solar cell battery, and (b) the slide-rule around the edge for time/distance calculations: set your speed against the 60 mark and you can do quite calculations in flight.
Tim