You said they had the most interesting project. That's less uncertainty in your life. They are giving you a shot: even less uncertainty in your life. What do yo

You said they had the most interesting project. That's less uncertainty in your life. They are giving you a shot: even less uncertainty in your life. What do you have from the other companies? Interest, but still uncertainty. Always move away from uncertainty. Edit: taking your update into consideration, still move away from uncertainty and take the (next best) offer at the place that suits you best. What could you do in a week anyway? Or what could you learn about their processes in a week? A good test drive takes a month.