1. Do my own
2. Reliability and quality of hiring someone else along with cost. By doing it myself it is the time that really is the only downside I feel.
3. Still do it myself, it gives me a chance to evaluate the crop as I sample in season.  I can take care of scouting across the acres while I'm sampling.
4. I would want it done by a competent person as sometimes the Co-Op will send out someone with a probe that doesn't know what really is going on.