So, I've just graduated with an MPhys in the UK, with a decent 2:1. I have a funded [minimum EPSRC stipend, £13.5k] PhD position at my current university, that starts in October. I also have a job offer in the US, to work in software. The pay is (what I would consider) pretty decent, $130k [£80k] a year. Right now, I am swaying towards taking the PhD, because I'm worried that if the job falls through in 6-12 months time (they don't like me, or I don't like them), I'll be stuck with no job or education. How likely is it that I would be able to get a PhD position again, either in 12 months, 2 years, 3 years? Are they going to prefer the physicists who have just come out of a masters, or will my experience count for something?