The Brazilians. The company I work for owns a bunch of 'em. See my homepage for some pics. The COEX flight burning fuel right now is proabaly an XR, their longest range 145. It has a 15,000 lb tank capacity, I believe, which allows it to make the IAH-MSP run. Our longest range, the LR, probably couldnt make it. Good airplanes, I have been dispatching them for for almost 9 years now..
Last week I flew (I am a white knuckle flyer) in one and it is a very stable aircraft. It has a much smoother flight in rough weather than a Boeing 757 (much larger).