Rigid all the way! I had the opportunity to sell Vision X. They leak! I won;t sell them. Sold a couple pair when I was with GOBI. They did not stand behind their lights. (back in 2008). in seeing pleanty of posts on the 4X boards, it is proof they are hit/ miss on their quality.
Rigid has the better product. They are built in the US in AZ. Yes, parts are sourced from all over the world. Craftsmanship is top notch!!! I even had one customer ask to have a replacement lense brought in after 2 years of abuse. Rigid brought the lights in, replaced the lense, and shipped back re-sealed. great customer service.
If you are going to spend the money on LED light bars. Go with the Rigid. The Difused versions are not that bright in comparison to their other patterns. The difused are designed to light up close to the truck and do a good job of that. However, distance for backup or long range is not there.
...hope that helps.
If you decide to go with those lights, give me a call if you have questions (even if you decided to buy elswhere) I can at least give you my personal experience with them.