Would you wait out for a better job for the sake of possible higher salary? Or take an ok paying job, good job benefits that is ready for you to start?

Take job first. since it is already okay paying and has good job benefits. At least can meet your financial needs at the moment. if this job cannot satify your living needs at the moment, then you need to network harder to find a job that does

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Continue waiting is a risk because no idea if the better job really comes and how long it takes to come.

Take first, time is an opportunity cost. Do consider the "locked in" period if nay though, cuz that affects your flexibility

Take first

Take first and leave for the better job if it materialises. If you're quitting during probation the notice period is minimal anyway.