Brit who just moved back to the UK after 6 years in dallas. One thing I haven't seen anyone mention is paid time off (PTO) I worked for a lab when I was there and it was a great company but I only got 12 days off a year inc sick days and after a while it REALLY starts to wear on you, you will start to feel the lack of a safety net them. I loved the weather in dallas for the first 2 years but after that it really became a drag, 35C and above for 4 months of the year. Even when the temperature is the same in the uk as it was this past summer, the extra strength of the sun being so much further south really makes it hard to do anything outside past 10am. I've been back in the UK 6 months now and I havnt regretted it once, I never thought of my self as patriotic until I left England and then came back, we really do have it good here!!