Ask HN: Would you take a job that might suck over an already bad one ?

I have been very unhappy at my current employer for a while now. It's very frustrating to come to work every day in the morning. The work is very boring and I'm not doing anything important. Also, my personal life has started suffering because I just don't feel like doing anything due to my mind being asleep/numb at work all day. The good part is however, that the people are nice, there's flexible timings and there isn't a ton of pressure. The work, however, is menial and I am not learning anything new at all.

Now I have an offer from a big corporate firm's IT department. From conversations, they are really eager to hire me but here's my initial feelings about it. The project 'sounds' interesting but I don't have a good feeling about the people I'd be working with. It also seems there will be a lot of pressure to perform and the environment will be very corporate-ish (as compared to the laid-back casual environment at my current job).

If I don't take the corporate job, I'm afraid I'd be stuck at my current place doing menial work (which, at this point, is very boring and I'm not learning anything new). Also, the my current team (despite being nice) just talks about building a world-changing product but I (through my experience) know that the product won't be successful (the team has been working on it for 3 years and there still isn't anything to show for it). The corporate job could end up being worse with worse people and a worse project.

What would you do in such a situation ? Any anecdotes/advice from past experiences will be much appreciated!

thanks!