The MR 16 and similar designed lamps are focal point lighting. Example: To high- light the single rose in the center of a table for two on that special night out. It usually takes a combination of spot lights and flood light to completely illuminated a display, which lends to track lighting, where units can be moved and adjusted for specific effects. MR16 as well as being hot also have short life because of the heat. I use a combination of PAR 16 60 watt 130 volt and PAR 20 50 watt 130 volt lamps for illumination. Fixture cost was considerable less, when you are not buying a transformer per fixture.
The recessed can lights are 50 watt R20. The track light head shown in the first picture is a 50 watt PAR 20.
The smaller head open bulb fixtures, last picture, are the 60 watt PAR 16 which is a pretty good spot light with out getting into the MR16 low voltage systems. The shaded enclosed fixture houses 50 watt PAR 20. In general every other track head is a flood or a spot.
