It is a very unique airplane. I demoed one last month and we may end up buying it. The cabin feels much larger than a 400 series. When my boss stuck his head inside his first remarks were about how he could dance down the isle! However, it is underpowered and very rare. Fuji/Commander knew they were not going to make many of the piston version so they used all generic parts. The people I have talked to have said parts are not a problem. From what I have seen, it is the best piston twin for the money. The 700/710 were designed as a proof of concept for a turbine version of the airframe that was never built, so the airframe is very solid. The 710 uses the Lycoming 541's which I have never been a big fan of.
Alex.