Coastrider, even though Granny seems to be under the impression that us Area guys know nothing about aircraft performance, we do realise that B1900's can do 240 IAS when on the descent (actually thought it was 245 kts but whatever). If by the time the 'Megajet', gets out of the 150kt jetstream that he is in, and is able to slow down to anything near 250 kts IAS, and I still have him close to 10 NM behind you guys I will happily keep you number 1. The problem we have that Approach controllers sometimes seem to forget is our aircraft aren't all similair heights, in similair winds, doing similair speeds, so it sometimes is a little hard to predict when and where the speed will come off. So Granny you guys might cringe, but instead maybe come and offer us direct UKRUM and high speed with our number 1 and that would be more helpful
By the way we do notice when you guys have increased to 245 kts, but its a double edged sword cos I've had you guys start an early descent so as to speed up earlier and stay number 1 but by descending early you get out of the tailwind and any increase in groundspeed gained from the increase in IAS, is lost due to the lesser wind.
Sometimes unfortunately with the big boys mixing it with the FC's and DHX's, it will always turn ugly no matter what we do, and someone will feel hard done by, but I assure you the majority of us do know what you can do, and try and accomodate as best we can.