I have both, sky and gw, and they're both great. I use gw on my old XL 4.5 and sky on my n3ds XL 9.0. going back to my old 3ds is a pain as i only want to play on the n3ds. The biggest problem for me are the saves cause they're not compatible. the biggest advantage of the sky is, that no exploit is needed to be loaded. just power on and start to play. it even remembers the last game played so no need to cycle through each time. i am really tempted to system transfer 3ds > n3ds and update (needed) to 9.5. who knows when gateway finally arrives on n3ds and if sky will be working on 9.6.