I bought the Samson years ago as a cheap emergency back-up. Works absolutely fine, does exactly what it says on the box.
Like Ed_S (above) I now have various high-quality units (Radial, Fishman, etc.) so I never use the Samson myself, but it has come in handy for helping out other band members and at live recordings on quite a few occasions.
Sound? I've had no compliments about it, but then I've had no complaints either.