I'm using a pair of Inon 2000s and a pair of Sea & Sea YS90DXs. I miss the power and spread of the SS200s, but then I again I always missed that for at least part of the year every year since I bought them.
I think we should expect failures from time to time, and if amenable to our respective budgets should set some limitation to the effect of failures by carrying spares. My SS200s were not reliable for the first couple hundred dives or so, but after having Ike work on them a few times have been rock solid for the last 5 or 6 years. I wouldn't have been that patient with another other strobe, but like you really enjoyed the light from the 200s. Though I always did, and still do, carry 5 strobes because it is my belief that in time something SHOULD go wrong considering the activity. That some of these companies make equipment which is as reliable as they are is really quite amazing. After all, the environment for their use is at best, hostile, and many of us treat out photo gear like tools rather than treasured heirlooms.
I carry a limited redundancy in equipment (my extras = 3 strobes, 1-D2x, 5-synch cords, 2-CF cards, 2-hard-drives, 1-reg, 1-mask, straps etc.) simply because it helps make the 10 grand or so one spends for a couple weeks in some distant location a little more protected from devaluation due to equipment failures. Plus my time away from the office, while generous, is limited and I don't want any of that wasted either.
If you shoot long enough your old gear tends to become your backups, but in some cases, cameras in particular, sometimes you just bite the bullet and buy extras. I'd feel somewhat naked going off for 2 or 3 weeks of diving/shooting and not carrying backups.