Hi everyone,

I am writing a research report on Tesco Corp. I need to get a gauge on the quality of its top drives. Could you please let me know how different companies are perceived in terms of the quality of their drives, especially NOV, Aker and CanRig? Are costs significantly different? Would you say Tesco Corp. has a competitive advantage going forward in terms of how efficient, safe or inexpensive its drives are? If you could comment on its tubular services segment, that'd be great too.

Thank you very much! Believe me, I've tried finding this on my own just about everywhere. There don't seem to be any top drive reviews.