The wow disks should have a 100% white screen and likely 30% and 80% as well. On an all white screen, does the entire screen look white or do you see various color anomalies like red or blue shifts in various areas of the screen? it's going to be more noticeable on 30% and 80% patterns. Some may not notice this, but it stands out on my high power screen.
The 5020 can out-muscle the Shark 30K for 3D lumen output. The 30K in 2D mode is a solid 950 D-65 lumens which is fairly bright compared to some other models. The 5020 torch mode can be calibrated to near D65 with ~1400 lumens which is impressive for ambient light viewing.
In terms of a 2D comparison, they both have very good overall performance. despite the wide pixel spacing on the Epson, it looks nice and sharp on my 142" HP sitting only 14 feet away which is relatively close to a screen this size.
3D on the 30K is some of the best i've seen so far. It has all the elements necessary for top shelf 3D on a budget.
here's the advantages vs. the W7000 which I still have (it's currently used at work for PC display, it still a very sharp projector)
- Faster color wheel - this really makes a difference for those that are RBE sensitive. The 30K is noticeably better in this regard on 2D and 3D.
- auto lens controls
- IR 3D for best contrast i n 3D mode
- cheap factory replacement lamps
- Best 3D glasses - Sharp G20.. hard to explain, you just have to try them on. Very comfortable, large lenses for glasses, 2D / 3D switch for those that don't like 3D.
The W7000 is brighter in 3D than the 30K. It works fine on my 142" 2.8 HP since the projector is positioned for max gain.
let us know how you make out. You should try to see the 5020, it's a very nice projector for 2D and 3D.