Personally I would do it. I have 2 silver jumbos, and 1 silver falcon, and next am going for a gold S2. They do break down, but don't think they are more frequent - you can repair immediately using a greenie or two, but otherwise just wait between 8 and 12 hours, and they are repaired. The flights are shorter than normal planes, and they look good!!!!
Onboard fires seem reasonable, no issues with passenger death rates, and as they are a higher class looking plane, they attract a better clientele, so less anti social behaviour issues!
Thanks for feedback - will purchase plane after land purchase. A high class plane and a better class of clientele is what is needed to raise standards and prices, since we are not a charity.