Long range cruise is .82, don't know the fuel burn numbers off the top of my head. We regularly do a 2600 NM leg, it's also South america to the US so really no wind issues on that route. It's a six hour flight sometimes as low as 5.5. Higher is better in this airplane. 430, 450, 470 are the regular altitudes. You won't do 92 at those altitudes though, more like 88 or 490 KTAS. LRC is about 460 KTAS if I remeber correctly. At 450 and 88 you'll see about 800 pph per side. 3000 miles against a 100 jet probably wouldn't work too well. It has an NBAA 3400 mile range but that is NBAA perfect numbers crap. If you fly it on a route (like in South america) where you can descend when you want, it may be possible, but a falcon 900 or a 50 EX may fit the bill better. Ours has been pretty dependable lately. Most maintenance issues involve false CAS messages( there are like 300+ messages you can get). Occasionaly the only way to clear them is to completely depower the airplane and start over. It needs a CTL-ALT-DEL on the panel. Mechanically agreat airplane but more computerized than it needs to be.
You Should consider tha Chalenger300 and the Gulfstream G200, the roomier cabin will be a high value item on 3000 nm trips, but consider a longer range a/p if you're routes winds may no help some times (a Da2000/2000EX or a Gulf G-350 or a Challenger 604).