Same here, we are just evaluating.
Got to say, I´m more impressed with the 500, it offers a lot more:
room, T/O performance (if that is a concern), range, galley space.
Very quiet cabin, boss measured 73dBa, which is very quiet. A comparable product of different make had a measured level of 76dBa - at the same FL and seating position.
Had a 4 hours introduction on the avionics, a very impressive package.