LED spotlight bulbs are much more energy-efficient than incandescent or halogen spotlight bulbs and last a lot longer too. The most common pin connectors are GU10 and GU5.3 (aka MR16) that operate on 230V or 12V, respectively. LED spotlights are very versatile and can be used for general or accent lighting, depending on things like the beam angle, the CRI (colour rendering index) and the colour temperature of the bulb. If you want to be able to dim your LED spotlights, make sure to choose dimmable LED spotlight bulbs. If you like the way your current spotlighting looks, choose LED spotlight bulbs with similar specifications to your existing ones.