CJ2, Bravo and Encore are all pretty easy to fly, but only the Bravo (on US register) and CJ2 can be flown single crew as far as I know. Best of the lot is the Excel if you ever get a chance to have a go in one!!
All citations come with speedbrakes as standard - apart from the Citation X they are all manually controlled devices - not sure if the X takes control of them or not. Only concern is that they all make the airframe shake like it is the end of the world and the noise factor increases by 200%!!!
Good luck
