depende talaga.

kung critical yung part, then i go OEM. examples of these are the engine support and sensors. wala atang hindi OEM/casa na sensor unless you risk buying surplus from chop chop cars.

some non OEM parts are better. like for suspension, i went for Old Man Emu shocks and Super Pro bushings.

others like mufflers, rims, tires, spark plugs, wipers, weather strips, rain gutters, light bulbs, stereo/HU, speakers, air filters, air intake manifolds and the like are better kung outside sa Casa mo kukunin

depende kung saan talaga gagamitin

like what some post ahead sez