Now everythings gone to China, it dosen`t leave much choice, but Philips have, and are still, the best manufacturer of SOX lamps, (Thron and GEC were also great brands, but all gone now).
As with Halides, theirs only Sylvania that are not PRC made, not sure about the others.
Thorns MBIF halides were the best in their day, then GE took over and they remaind good lamps until they went PRC.
I have 1 Sylvania MetalArc 175w probe start MH and it is NOT made in China.

The

's however, were made in China. However, the arc tube is of US design
