A spotlight throws a beam from the ground into a tree's canopy or up a wall. Where you stake it and how you aim it matter more than which one you buy; how to uplight a tree covers both.

Every spotlight here takes a stock MR16 bulb — 5 W, 2700 K — so a failed bulb is a bulb, not a new light; replacement MR16s are in Bulbs. They join the same 12 V cable as the path lights, on the same transformer and timer. For the transformer, count each one at 5 W.