Its says it uses Jet-A is this the same as Jet-A1?
As far as I'm aware it is, possibly with different low/high temp tolerances and a slightly different specific weight.
The TwinStar essentially makes everything else in its class obsolete - and expect it to get better. The most amazing fact is the extremely long range capability - up to 20hrs endurance @ 29% power @ 90kts. That said, the engines and airframe are equally as unbelievable.
Interesting, it's marketed as competing with the high power singles even though its performance outclasses most twins.
Tht said, delivery dates for TwinStars have constantly slipped and there are rumours abounding about spec changes etc. Hope Diamond hasn't overstepped the mark.