The question of how much money is involved is an important question, but it would also be important to know why the liens have not or cannot be honored. For example, is it that the lien was improperly asserted, that it was asserted against assets that didn't exist, that the assets were never part of the bankruptcy estate, that the liened assets that are part of the bankruptcy state are exempt assets, or something else?
If you can recover more money based upon your judgment lien, then it makes sense to attempt to do so; but if the issues are such that you're going to end up with nothing based upon the lien, but will at least recover something if you put yourself in with the unsecured creditors, then something is generally better than nothing.
We don't have enough facts to work with, so perhaps you should consult a bankruptcy lawyer with the full story.

