I really enjoyed my SGP 4.0, but the hardware is a bit dated for my uses. I kept running up against RAM limitations. Now I have a Nexus 4. With 2GB of RAM, I feel like a monkey in a banana store.
Between the SGP4 and the iPt4, the SGP4 is the clear winner with a much better feature set.
That said, I'm still using my iPt4 on a daily basis; but for two reasons only - readily available speaker docks and because I restricted its use to an audio player (audiobooks, OTR, streaming music).
I would've done this with the SGP4, but there aren't any speaker docks for it. Some idiot at Samsung stuck the charging port on the top, so it would dock upside down. Just as bad, is Apple's idiotic decision to put the headphone jack on the bottom of the iPt4. Design engineers really do need to visit the real world every now and then.
