frankly I would favor the CJ2 without the fadec system as its a simpler airplane and has none of the CJ2+ irritations such as the need to reset the fadec with a laptop each time it fails which on some aircraft is quite often.
The latest proline on the CJ2+ has a mind of its own when auto capturing the ILS which is an annoyance.
The CJ2+ advantages are the increase take off weight and ZFW which are a strange addition considering the airframe is the same on both types.
The big plus is the price as a 2002 CJ can be had for 3.5 mill which is a bargain for such a capable machine. Be sure to get a 3 screen proline system and a proparts and tap elite paid up airplane. some models have a digital N1 computor which calulates the N! for take off, climb and cruise.