I can feel your pain Diracula (cool name by the way). Like me, you sound torn between doing what you're interested in and doing what will most likely get you a decent job. I'm currently in my 4th semester of my physics PhD (theory) and by the end of this semester I need to pick an adviser. I have a lot of options but ultimately I know for a fact I don't want to be in academia after I'm done. I'm an industry cat all the way. In my current search for an adviser, I've found some advisers that will consistently turn out research like industry workers (titles include: photonics researcher, various principal scientists, research engineer, CFD engineer, quants) mostly because of their networking through previous students. Other advisers more or less have a track record of turning out postdoc treadmill runners, which in most cases sound like they eventually lost contact.
So far, my hunch is that the adviser is going to be the key to doing what I'm interested in but grabbing enough skills and contacts to still end up with a good job. Are you applying for a PhD or currenly in one? If you're currently in a program, then I would start hounding everyone you can about what the previous students are doing now.