I service my own regulators with industrial and generic parts. Most of the parts that you change are orings that are very, VERY cheap (3 to 5 cents are tipical costs). Other generic equivalent parts are easily available from Trident and others for a few dollars ($3 for a high pressure seat is typical). So, even though Aqualung might want end users to think their orings are made from a magical substance and any other oring will just kill you because they violate the integrity of these "life support" highly sophisticated equipment equipment, the truth is that regulators are easy to understand, simple mechanical gadgets that are easy AND CHEAP to service.
I would never buy a dive computer that does not allow the end user to change the battery on his own. That kind of product design boils down to a coercive tactic to keep end users tied down as a continuous revenue stream based on purposefully bad design. When I buy a product, I would like to think that I pay the manufacturer to build it for MY needs. 5 yr limited warranty from Aqualung? I prefer to stick with Shearwater Research and their superb tradition of standing by their products to the benefit of the end user.
Right... ever heard of the phrase "used car salesman"? You go to this character and he will also give you "Professional assistance in determining the right equipment". But whose needs will this right equipment advice serve best?
Thanks, but no. I don't do "trust me dives" and that includes taking personal full accountability for the state of my own equipment.
The heart of the matter is that putting the roles of mentor/instructor together with that of equipment sales person is a conflict of interest that goes directly against the end users.