I have been getting the mobil one synthetic grease lately. Seems like a good all around grease for everything. It's pricey but the little that I go through in a year makes little difference. If I owned a construction company and were going through tubes a day I would look more into purpose-made grease for different applications. Or if I had a boat trailer I would buy specific marine grease, though the mobile 1 may be rated for that as well. My next choice would be mobil xhp222.
Just be careful for compatibility issues, as some greases aren't compatible with others. I think this especially applies to moly greases.
On a side note, we have a few lincoln pneumatic guns at work collecting dust because they have for the most part gone to bulk grease with pneumatic pumps on barrels. They still have a few specialty greases in tubes, but we just use manual guns for that. One of these days those guns will probably be tossed and end up taking a ride to my garage.
