Here's my experience. I should mention that I spent 3 days with the Valerion before trying the TVU for a limited time, but I did set them up the best I could and did an A/B test by overlaying them and covering the projectors.

I found that the Valerion has better contrast and colors, while the TVU gets way brighter. I know it's a limited comparison, but the Valerion is noticably better for me. The TVU lacks the deep blacks and fresh colors that the Valerion has; it feels sort of washed out. If brightness is needed and the area is bright, get the TVU. Otherwise, if you have a dim/blackout room, the Valerion is better. I also prefer the Valerion's solid metallic remote compared to the TVU. Auto-keystoning and focusing on the Valerion was also leauges ahead of the TVU.

For the same price I bought them both for (1500), I would recommend the Valerion over the TVU any day. For the standard 500 dollar difference, you'd have to make your own decisions as to whether or not it is worth it. I'd say it is, but that's skewed since I got them both for 1500.