I use it here for surface drainage work. I trust it enough that I set my customers up with it for surface drainage work as well. My static testing combined with 7 years of using it on my own farm for this purpose has led to this conclusion for this particular application.

I would not recommend it for tiling. A local base station will provide the highest accuracy and consistency. Being close to one of the MNCORS stations won’t be the same due to how the network operates. I have witnessed MNCORS have vertical positioning jumps from time to time. Not very often, but it does happen. With a scraper, it is easy to fix anything that went wrong due to a temporary jump. 

For the dollars involved in plowing pipe, I don’t see the savings of not buying a base station being worth it in my opinion. You could still get corrections over the internet from the base rather than buying two radios by using a modem such as an Intuicom Bridge X on the base station.