[TexasCowboy]

Top drives can be a real money saver to the operator if the hands are trained to use them.
Varco was a pioneer in a lot of our tools, but CanRig is probably the premiere top drive nowdays.

I have one on this rig I'm on.

[HoustonCurmudgeon]

CanRig is probably the premiere top drive nowdays.

Always liked TESCO myself, but it might be because you can/could rent one when CanRig would only sell.

[capitan_refugio]

Those look like triples stacked in the rig.