Out of curiosity, guys, what exactly can the Inspiration do that the Ouroboros can't?
Other than get you in the water for less than $10K?
Which, if someone considers the Boris in the first place is probably not much of an argument.
The Ouroboros has the edge on scrubber duration and features such as gas management, more advanced HUD and buddy display. The only feature I can think of that only the Inspo offers is the temp stick.
Both are rather large and heavy and travelling with either will be an expensive pita.
Not convinient, but possible, Inspo divers have been hauling their rigs around the globe and Mike, I asume you'll take you Boris back with you rather than leave it in the UK for me to play with on my next visit.
For recreational limits one can argue both are overkill and both have been used in excess of their rated depths, scrubber times, in overhead environs ... you name it. Looks like the Boris has the edge on the extreme end as none that I know has imploded yet. Then again, that depth is way past most divers needs and limits.
The main difference for most practical puposes are the location of the counterlungs and the different electronics. Both are more personal preference than anything else. Some people will prefer the likely lower and more even WOB on the Inspo, others will insist on uncluttered chest and enclosed lungs.
The Boris has a single setpoint controller and separate pO2 monitor and separate power supplies whereas the Inspo has dual dependend controllers and joint power supply.
The electronics in and by themselves make the Ouroboros the superior rebreather in my opinion. As do the radial scrubber and the additional features. The only setback is that they
do cost quite a bit of money.
So IMHO the Ouroboros is hands down the better rebreather.