Hi
I have two of these. A normal one and a "mini".
Of all the Joki(s), I came across, not one is the same as they are more or less made on order.
One of mine has two CLs, the other a single one.
One has an ADV, the other none.
One has dil and oxy in exhale, the other in inhale.
One has cells in the top, the other in the canister.
Both are set as over-the-shoulder-unit, taking place next to a set of double.
Some people use it as a real SM.
Some use an original Airtess dsv, other a Golem SM.
Instructor not needed as it shouldn't be a "first" unit. (Well, I did start rb with a Joki but it is another story, and I wouldn't suggest anybody to do that)
If I remember correctly (don't quote me on that), the Joki started as a Joker, a sccr unit.
I know two people building the "original" unit and another one building an "improved" unit. Indeed, the unit had the reputation of leaking
But mine are perfect
If I were forced to get rid of all my units and keep only one, I would take the Joki as I would always be able to fix any problem I could have.
And if Xavier Meniscus can dive hours and so deep with this machine, I am sure the Joki is good enough for my little dives