Variable Load
The 92 certainly has good redundancy in many areas, but let's look at the points you mentioned:
3 hydraulic systems - so does each jack etc have 3 cylinders? or does it just have 3 pumps, same as the 225
3 sources of generated power: same as the 225 in N Sea fit
2 tail rotor control paths: True, the 92 has double cables whereas the 225 only has single (plus the NFG spring equivalent), however how many Super Pumas have had tail rotor cable failures - none that I know of, whereas its a bit of an issue with earlier Sikorsky products (due to the relative ease of making maintenance errors in this area). However the 92's control run is only duplex in some places...chain is as strong as its weakest link etc
Dual flight control paths before the mixer - I haven't heard that one before (unless you mean the captains and co-pilot's controls!) but how often has there been a control disconnect in that area in any helicopter other than as a result of being shot at?
4 Lanes of autopilot - same on the 225.
However we have discovered in another thread that probably the most critical area of the aircraft seems to cease functioning with a single-point and reasonably predictable failure due, rumour has it, to poor system design, whereas the L/L2/225 has a much more robust system. How many other poor system design issues are lurking that we have yet to find?
LH accessory module - yes a disgrace on the L2, but I am hopeful that a final fix, just out, will sort out that problem at last.
Cracking on the L/L2, yes there have been cracks, but on airframes with many thousands of hours, not less than 200 as is the case with the 92. I do think this is a valid concern for the 225 however, as the gross weight has gone up massively. Only time will tell.
Cockpit access: The L/L2/225 has a high step to get in and is slightly awkward. The airstair door is great but I found having to get into the 92's cockpit by squeezing in through the jumpseat area to be worse. Be careful with the airstair door however, apparently its not HLO-proof!
Cabin noise: you don't know what that is like for the 225 because you have never been in one with the 85db trim fitted (neither have I for that matter!) but 85db sounds fairly quiet to me. Do you know what the 92's cabin noise level is (actual, not brochure figures)?
Anyway, these aircraft are pretty close really despite my trying to score points from Nick - that's why it took you so long to decide which to buy. I am sure you will enjoy your new toys and if I were making the choice for an aircraft to operate in your location, the fact that the aircon actually works on the 92 would be a big factor. With such short sector lengths, performance could hardly have been an issue. When is the delivery scheduled?
In fact I think the S92 is wonderful really - (well you never know when I might need to come grovelling down to the land of jungle and polo pitches for a job!)
HC