I went through all this for a company about 2 years ago
If you're going to consider the Meridian, stop considering it and think TBM 700C2 instead. If the TBM is "only" a 5-pax aircraft, the Meridian is much less than that when you put a decent load of fuel on.
If you have a look at
www.controller.com you will see used PC-12/45s for around 2.7m USD and same model TBM700C2 for about 2.3 to 2.4m USD.
Between those two there is fck all difference in fuel burn and big difference in available space - go the PC-12.
Good luck!