It's quite cool seeing a C525 versus an SJ30 which goes roughly twice as far even though it has similar weights and the same engines.
Cessna are getting somewhere with the CJ3/CJ4 but the SJ30 is lighter than them I think.
IMO it's a cracking aircraft - I've never been in one but I know people who fly them, and I don't understand why it hasn't sold very well. Maybe with an avionics revamp and some other little features will be the tipping point (a la Citation "Ten").