I'd been using a bigger power supply unit to power my pedals. When I made the switch to using my POD XTLIVE for live shows, I was forced to using that unit also as the POD didn't come with a power supply of its own (second hand unit). I was delighted to get this power supply.
Pros: Its compact, relatively light and not at all complicated (obviously). It fits into my carry case for the POD along with other various leads.
Overall: Very happy with the quality and as its an official product, it should be standing the test of time.