Hi there,
Have you heard of Higher Power Aviation (HPA) in Dallas Texas!
www.jetcrew.com
Just did my 737-200 type with them and then did the differences course on the 300series. They are a great bunch of folks down at HPA.
They use the simulators at Boeing Alteon (DFW) and when fully booked with students also use the Southwest facility at Love field (did mine there and loved it). Currently they are running on about twelve students every week at $7350, looks like the 737 is popular.
Am just about heading to the airport at DFW on my way back to London.
Zazoo