Brakes never failed on me and their performance is phenomenal. Brake energy limit is only a problem if you're planning on performing a sequence of aborts in EGKB.
All new airplanes come with brake heating, to my knowledge.
The fuel figures are correct and the airplane is very economical to operate. 'Slowing down' to between mach .80 to .81 (= the speed at which the F2000's wing seems to work most efficiently) even makes the fuel flow even more sexy.
Maintenance is not cheap, but rarely something breaks. There are gremlins in the EASy avionics which are usually cured by a reset. But it is not a regular occurrence. If you stick to a fixed routine when starting up the system, then you should not have many of them.
The 'old' Collins boxes of the Classics never had any of this...
There is a a workable procedure for preventing the potable water system to freeze, if you don't have a hangar.
@ His Dudeness: don't be. Your owner will love it's economy, speed, baggage compartment and silence. Send me a pm if you have doubts.