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The following established underwater filmmakers and photographers have more
than 150 hours on BioMarine rebreathers and have had no problems with O2
sensors underwater:

Howard Hall (300+ hours)
Bob Cranston (300+ hours)
Mark Thurlow (camera assistant, 150+ hours)
Marty Snyderman (100+ hours)
Rod Farb (170+ hours)
John McKenney (150+ hours)

Established underwater filmmakers and photographers who have recently bought
BioMarine units: 

Mike Severns
Al Giddings

The point is that the BioMarine unit meets their requirements for
reliability, performance and price, and the unit will do the job that they
want it to do. Which is why twenty-five sport divers have ordered BioMarine
units for what they want to do. 

In the military, there are more BioMarine designed mixed gas rebreathers in
use around the world than any other CCR, and with more than millions of
man-hours of use and refinement, no one has suggested removing the sensors.
And recently, the Brits just adopted the Mark 16 triple-sensor rebreather
for its forces.

In commercial diving, the have been more BioMarine rebreathers in use than
any other mixed gas CCR, because they do the job, sensors and all..

As far as cave diving goes, the only type of unit that has been used to set
world records, individual records, US records and all that stuff if you are
interested in records are semi-closed units whose operation is tied to
respiratory minute volume (RMV)- Islers one-off unit who showed everyone
what could be done in caves with a semi-closed RMV unit and the Halycon who
broke Isler's record. Why do these folks use RMV units in caves- because it
works best for them and meets their job requirements. 

As far as recreational diving goes, the unit that has the most sales is a
semi-closed system built by the granddaddy of rebreather manufacturers,
Drager, and its Atlantis rebreather with 1000 worldwide sales (according to
Drager). It is relatively inexpensive, $3500, and is a no-brainer to
understand and operate and makes a good deco unit for deep dives on OC or
CCR. Why are divers buying this one? It fits their needs pricewise,
maintenancewise and braincellwise.

Which unit do I think most rebreather wannabes are going to buy in the
future? The ones named above based upon need. Rod

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