I have bought multiple versions of this from the 40 watt powering LED strips under shelves to 150 watt powering low voltage landscape lighting. They have been working great. They are super sturdy, silent, because they don't have a fan, and act as their own junction box. I haven't noticed considerable heat in-lieu of the fan either. The junction box space inside is small, on all versions, but if you cut the wires the right length, and are mindful in how you arrange and bend them, you will get them all in. I bought them for their dimming capabilities. I use them all with GE Enbrighten Z-Wave dimmer switches. They go through the brightness range of the led's smoothly and do not flicker.