Hey guys

Not football related but which of these names sounds good/classy for a borehole drilling company.

1. Durawell Borehole Services Ltd
2. RockSol Borehole Services Ltd
3. Aqua Borehole Services Ltd
4. Groundwater Borehole Services Ltd
5. Rockstar Borehole Services Ltd
6. Supreme Borehole Services Ltd
7. Premium Borehole Services Ltd
8. DTH (down to hole) Borehole Services Ltd.

Any other names ideas are welcome.

Cheers