I am lucky enough to have owned a Rolex GMT (1972ish), Breitling (2003), & Omega Speedmaster (1970ish).
The Breitling was a great watch, but it was heavy, thick, and very expensive to fix. It required a tune-up every 2-5 years or it would stop working. I had to sell that because I simply couldn't afford the upkeep. The Omega was great but got water damage when a seal broke. The Rolex GMT is the best of them. It requires a tune-up every 10 years but costs half as much as Breitling. It is also the lightest and thinnest of the three. The simple face also makes it much easier to read the time.