Tag Heuer's offering of a more wallet friendly automatic diving watch, with a ceramic bezel, is the Aquaracer Automatic Chronograph [cay211b.ba0927]. In Tag's lineup, it this watch straddles the gap between the entry quartz aquaracers and the 500m Automatic Chronograph Aquaracers (which have more than a passing resemblance to the Omega Seamaster 300m Diver Co-Axial Chronograph 42mm watch collection).
If for whatever reason you don't want a Rolex then take a look at the Blancpain Fifty Fathoms Bathyscaphe. It's water resistant to the usual 300m, is a more comfortable 43mm wide (and 13.40mm deep) and even includes a transparent case back, which is a feature less often found on dive watches; though, this may be due to the increased thickness they give a watches case, the perceived weakness that they give and the additional cost involved.
This Formula 1 Tag Heuer watch is one of several in a range of watches celebrating the astronomical racing success of Ayrton Senna. Born as Ayrton Senna da Silva on the 21st of March 1960 in São Paulo Brazil, he would later go on to win three formula 1 championships, and is regarded by many as the greatest driver who ever lived.