Wow…I am sure this will open up a can of worms…and I may not be the expert in MEII, but here is my opinion after a few dozen hours in the Twinstar:
I personally think the Twinstar is probably about the easiest training platform to get your ME, ME-IFR, MEI, or MEII. However, I would also have to say whether or not it is the best would totally depend on what you were going to do once you get your rating. For me, my goal is to continue to fly the Twinstar and then move into a VLJ. If I were wanting to go fly a 310 for cargo, I would not want to get time or ratings in the Twinstar.
My reason is this…the Twinstar is not your typical “twin”. First and foremost the engines are FADEC, so you have single lever operation. You don’t have to worry about feathering, prop sync, mixture, etc. You simply look at the G1000, push the levers up to 80% power, and the system auto syncs, leans, adjusts props, etc. In the event of a failure, the FADEC will beat you to isolating the dead engine.
The Twinstar is also very forgiving during an engine fail. The large wings, winglets, and aero package keeps the plane single even in a critical failure. Beyond a few safety procedures in the event of an engine failure, the airplane acts like a fast single engine.
For the person who is going to stay with the Twinstar, all of these features make it something VERY safe and stable, while being fairly easy to learn. It is equally awesome if you want to move into something technologically advanced like a VLJ. However, if you are going to use the Twinstar as your training platform and then go fly a 1985 King 90, I think you may be setting yourself up for trouble. Granted you will most likely go through factory training, type training, etc. Just beware that your Twinstar time although counting in your logbook for ME, probably shouldn’t count in your mind as experience toward one of the older twins.
Although I am not the expert at all in what experience relates from one plane to another, I can tell you my personal feelings. I may be totally wrong and you might find something different. With all that writing, here is the summary of my thoughts:
The Twinstar is probably by far the easiest plane to get your ME ratings.
The Twinstar is probably the safest, most economical, most fun ME in existence right now.
I think it is the best time builder for a VLJ or light jet.
I don’t think it is the best plane to build time for you to go fly a complicated twin.
Hope this helps!!