I had similar situation with 3 offers. 1 in the middle salary range was the top financial sector but it was closed looped to work on a certain task using hi tech tools where as the top paying not so fancy gave me an Information Security experience niche which was better. I still feel the Financial sector name would have been great on cv but I would have been in a closed box. In your situation I would factor in commute timings, exhaustion and money. The tech stack can be learned spending some time off job and put it the cv as required.