Professional outdoor landscape lighting is not cheap, and Cheap outdoor landscape lighting is not good.
I work with an interior designer who says “Do it right and you only cry once”. My outdoor lighting designs include seeing the effects not the light source.I work with many different types of fixtures, lamps,color temperatures,filters and shields. Along with Professional lighting that lasts a very long time.
Maintenance is a must,I can’t tell you how many old installs I get called to look at where a fixture or cable has grown into a tree.Old wires and bad connections that do no longer provide proper voltage to the lights. Here are a few Horror story pictures.
old transformer a landscaper tried to fix with ducttape 
old cheap lighting we took out and replaced 
This fixture is like an aluminum beer can and most split up the middle,this system was supposedly professionally installed and was only 3 years old 
cheap light fixture that can’t hardly be relamped 
what happens to your wiring if connectors are not properly connected 
Cheap path light I took out and redid the entire lighting system 
bad wiring connections