I just connected this buck boost converter into a nice metal box with Anderson Powerpoles on each end. It's a nice small package, good display, and as described on this site. Additionally, the documentation was very good.

Really easy to use. Constant current mode automatically turns on when the load reaches the current limit set by the pot. For led's turn the cc pot multiple times counter clockwise, than using the cc pot adjust the voltage below the led operating voltage, now plug in the led, turn on the driver and adjust the voltage up to the operating voltage, keep an eye on the amps and adjust cc as needed. I use this to supply 60w led grid no problem. No extra cooling just install the included heatsink.

Easy setup.
Does exactly what I needed to do.
Priced right.

This is a great product I like that there are directions and that there's an Lcd screen .I am using it for a CPAP machine that's 15 volts.

Works as expected, slight discrepancy in displayed and actual voltage but so small as to not be an issue. The "case" is simple and functional no instructions for assembly but really there is only one way it can go. The reason I say "but" is the heatsink, it isn't attached to anything but on the opposite side of the pcb instead. I suppose it will work as heat will transfer through the board but the design could have placed those parts on the top side so it could attach. I'm going to put a small heatsink on the back also as the case has plenty of room and that should help.