Dynamic Component:
If it is a VIP aircraft you are looking for that is Single Pilot IFR, can carry 7 pax and has the right image then there is no comparison between the 109 Power and the other types mentioned.
The 135 is the dominant utility airframe in the UK but as Head Turner mentioned is a bit short on legs. Otherwise a capable and quiet machine.
The 355 and 427 are old technology but are relatively inexpensive to buy and maintain.
As always with a vague question of this nature it is very difficult to provide a definitive response.