You might want to look at a king air f90. It will have the same pax configuration as what you are currently in. You can find a good one for 1.1 mil and they cruise at 255-260kts. The fuel burn will be similar to that of a B200. -135 engines

AC-90 Turbo Commander 690A or B models with the Garrett TPE-331-10T engines

T.A.S. 290 to 300 Knots

At FL 260 and FL 270 you will see F.F. of 480 to 500 lbs total

No STC for RVSM so limited to FL 280.

How can everyone forget the PC12?
Just as fast as a KingAir 200 (260kts) just as big (actually bigger by like an inch) with half the fuel burn! Plus, forward airstair and cavernous cargo/baggage door. 1600nm range (those are real numbers, the 'book' range says 2200 miles but thats economy cruise and VFR reserves) I've personally done two flights of over 1200nm nonstop, normal winds.

Commander
 

This guy has a commander that he bought recently and is overhauling the interior and installing the glass cockpit offered by meggit. Don't know much about it but I think this aircraft might be to replace one of the 90's. I think it has -10's on it. Any thoughts on this plane?

XtremeF150

Pilot's Airplane
 

I have never heard a pilot diss a Turbo Commander. The dash tens should be great.

The Commanders are great airplanes. I have over 1500hrs in them. The -10T is hard to beat! 5400hr TBO, no phase inspections, and they sip fuel (250 lbs/hr aside at 270). The -10s allow you to hold your HP to a higher altitude than the -5s did. It is not uncommon to hold a 2000ft/min climb up to FL220 (in the summer), after that it drops to about 1500. OUTSTANDING single engine performance too! With full fuel, and a pilot you can still load close to 1000lbs. 290-300TAS is common.
The Meggit system is nice, expensive but nice. The good thing about it is that it is RVSM comp. The plane also has excellent short field performance.
The only bad thing about the plane I can think of is the fuel system (on the 690 series). The fuel tanks are all interlocking so it does take awhile to fuel. And the rubber fuel bladders are a drag when maint. has to be done in the wings.
If I had the money that is the one I would buy!

We just purchased a new King Air C90GT. It does an honest 270 ktas at FL280, burning 440 lbs/hr. That's not a LOT faster, but it meets the other criteria...

What's the story on the Citation 501?

What about the Beech Premiers'? Never flown one, so I don't know their runway performance, but I do know they can be flown single-pilot, and it's supposed to be 450KIAS(not sure fuel burn).

TBM850 would be a great pick if it wasn't for the greater than 4 pax load. I fly these planes and love them, but the plane only has 6 seats total, and if you're talking heavy baggage then you're going to run out of room. 2-3 pax in back with bags is very easy, plus you're going 305-310KTAS(book says 320, my number are real-world) on 400lbs/hr.

If the budget allows look into the KingAir B200GT. B200 with different/new engine and is supposed to true around 300 kts.

I currently operate a 350 and do 295-300 kts. I'm sure you have also heard that the 350 can be loaded up and still do this. Dont think this is so with the others. Guess it will depend on how many and how far you anticipate on avarage.

FBP