407GXP vs EC130
I've never operated nor flown an EC 130 (only the EC120) but I'm more than happy in the 407 GXP.
It's a proven design with modern avionics and a reliable auto-pilot. It's not too hard to transition from R44 to 407.
The only negative aspect for a private operator I can think of is the 50h/300h/3month lubrication interval. So make sure you have a close by maintenance department.
The EC130 to me is an exotic aircraft and I just don't like Safran engines. With H+S based in England support for the C47B/8 shouldn't be a problem.