Our owner looked at both the CL-30 and G-200 when he was shopping a few years back. One thing that came up was the range with seats full...the G-200's range was limited with seats full, combined with the hot and high performance, as well as the out dated cockpit compared to the CL-30, the CL-30 was the choice for us. The CL-30 might have a smaller baggage door compared to the G-200...but Also consider the pass through baggage compartment in the 300, not in the G-200...I wouldn't say the cabin is bigger...maybe wider, but not nearly as comfortable as the CL-30.
It's clear that the CL-30 cut into the G-200's sales. The G-250 will be everything the 200 isn't and a bit better than the CL-30 in every catagory...same motors as the 300 but a bit more thrust, IRU's, a bit more range, new wing (no boots) ...the list goes on...it will be the plane to have if you look at the numbers.
It's true that the CL-30 is lacking for serious overseas operations...a lot of guys don't like the lack of IRU's, and such...but I can say that it does everything as advertised and does it well. Bombardier support is and always has been a problem. Mechanics like working on it (atleast ours does.) Passengers like it, the operating costs are great and the list of negatives are few. Biggest problem is getting one, although I have seen a few listed for sale since the down turn in the economy.
Feel free to PM me if you want specifics...