Speaking as an enthusiast and not a rep:

After-sales support is really everything.... Also ask 'any' manufacturer at the considered time of purchase how much your projected long term turbine ownership is likely to cost beyond purchase??? @ 25/50/100 Hr service intervals and the predicted parts/labour costs involved under manufacturers general or normal operating conditions and even ask about some hypothetical crash component repair costs as well.... these costs are not often fully considered and an experienced dealer/rep etc. should be able to give you all these answers.

As an example when purchasing a new car one of the first things I look very closely at is the overall service, support, turn around time and associated ownership costs involved. For me these are as much of a deal maker or breaker as anything else. Again service and support for any brand turbine engine for that matter 'may' in the real world be effected by a customer or dealers geographic location, especially if high shipping charges are involved. Do your homework carefully and ask as many people as you can about ALL the brands and ALL the associated costs you may be faced with long term is the best advice I can offer...