Looks like you are anxious for info so I'll bite. We used GDC (Global Data Center) to file. Its a Honeywell company and it was a great service. Not sure what it cost, I'm sure its not cheap, but their X numbers were very accurate. With GDC, they told us what the burn would be so we didn't concern ourselves with charting actual burns. Figure 2500-2800 lbs first hr, 2000 for the next two or so and 1800 for the last couple. We almost allways planned FL390-430 right from the beginning, if fuel was tight, we'd go higher. Wasn't rocket science. The city pairs you mentioned would be a piece of cake any time of year, any altitude with any load. (at least pt 91)
Most of our flights were 135 so we had to pay closer attention to the numbers. Runways in the neighborhood of 5000ft required extra attention, pt.135 that is.
Our Charter rate changed a little, but was between $3600-$4200/hr. The lower rate was given to a customer who had a great fuel discount. $4200 was for suckers desperate to fly on a Ten.
Some guy mentioned mx issues. The ten has its moments but I saw a significant impovement in its reliability. I'm not sure how many tens are available for charter, but I know they are in demand. The company I used to work for committed all of ours to one customer and the dispatchers allways said they wished the had a couple more because they were constantly getting requests for them.
