CNET did not review the Samsung HZ30W, but we did review the, which is very similar.
The differences between the two are few and nothing related to image quality or performance. The higher-end HZ35W has built-in GPS for geotagging photos; a 3-inch, 614K-dot-resolution AMOLED display; and Samsung's Smart Auto scene-recognition mode is available for photos and video. The HZ30W does not have GPS, uses a 2.7-inch, 230K-dot-resolution LCD, and has Smart Auto for photos only.
Again, since the Samsung HZ30W's lens, image processor, and sensor are the same for the HZ35W, we expect the HZ30W's shooting performance and photo quality to be the same as the HZ35W's.