I finally played with my friends S5. Good, but lacks the responsiveness of the iPhone. For example, I opened the gallery app and it didn't open until about a second later, then the pictures were struggling to load like they did on my S3 and he only had like 200 pictures. I have over 2000 pictures and videos and they never are slow to load and the photos app opens instantly, just like every other app. Also, the gallery app did this every time, not just a one time thing.