The EC120 is a nice machine, have been flying it for a few years now. The CofG issues with it, is simply the cabin is forward of the mast, unlike your 206's and the like. Adding fuel and/or cargo to the aircraft does not do much, if anything, to the CofG as the tanks are under the mast, above and below the cargo bay. So long as you are careful and know what your cabion weight limits are, you'll be fine. Generally I fly it about with 2/3 pax and some bags and can usually get 2 hours flying time plus reserve.
A comfortable and tidy cabin, but it can get a bit rough at high speeds. As mentioned it depends what speed range your machine is tracked for. But it can fly nice at high speeds if set up for it.
The fenestron demands alot of power in the hover, and you do have to do alot of work with the old feet, you'll get use to this though. We had some problems in the early days with the VEMD/FLI tripping out, I believe a software update can sort this, I stand to be corrected.
I like it, sure is more comfortable then JetBanger and am able to walk away from the aircraft after a days flying.
TiP