I have them but don't actually use them, not because there's anything wrong with them, just that I have other stuff that's better. If you really need those basic effects, they're not bad at all. MLimiter is especially interesting, not because it's an especially great limiter but because of the control over harmonic distortion for dirtying stuff up.
There is one Meldaproductions plugin that I do use that isn't part of the free bundle but is inexpensive, and that's MDynamicEQ. I haven't found anything else quite like it for mitigating unwanted resonances.