And it's going to take more than an afternoon to evaluate these parsers. You have to look at the options, evaluate the API, evaluate if they're stable and supported, evaluate if they integrate well with you're project, evaluate any dependencies they might have, etc. Then you need a plan to manage these dependencies long term.

If you're needs can be solved adequately by strtok then that's a far simpler and more maintainable solution that can be knocked out in an afternoon.