There's a lot of good comments been made here, just for reference I have Jeppersen Flite Pro + Yoke + Rudders. The software is good for:
1.Scan
2.Procedures
3.Routes(Entire flight is recorded in horizontal and vertical navigatio)
4.ILS
and is bad for:
1.ADF tracking (no dip)
2.Weather generation is useless
3.No twin models
4.Rudder inputs are unrealistic
5.Expensive
I would be interested in any comments on MS Flight sim Proffesional?
If you do your an IR in a Seneca, good luck, remember its all about attitude both yours and what you see on the AI.
Happy scanning