Low voltage MR16 halogen lamps have a physically much thicker and shorter filament than that of it’s 230VAC counterparts. This produces a more even light distribution, generally ensures a much longer lamp lifetime and makes the low voltage lamps less prone to possible over voltage or “spikes” from the mains. The MR16 lamps are also protected from the harsh mains environment by the 230VAC to 12VAC transformer. Electronic transformers are generally well designed and features thermal protection, overload and short circuit protection and in many cases some protection against spikes from the mains. Although the initial capital outlay may be more for the MR16 halogen lamp choice, the overall performance and quality of light makes this the preferred choice.