(well the wiiu is like, 7.5 gen)
good job you are now in the land of the cod fan cigarettes
the wii u is actually confirmed to be in the 8th generation, and
the 3ds XL is just a bloody bigger version with a bigger screen that widens everything out of proportion, and just the fact that is claims to have better battery life.
i said nothing about the 3dsxl??????
okay now carefully examine what you want. the PS4
now what games are for it? are any of those games you want already on the
1. computer (if yours is good)
2. ps3
3. any other console you have
if so, you don't need a ps4. it's not going to make you cool. also, the ps4 is just a SLIGHT upgrade from the ps3. if there are going to be more good games that are ps4-only, then sure you can get it if you really feel that you should get that one game. if it's for a computer, and you hate computer gaming, then just buy a controller that can plug into your computer. its a good chance that game will support controllers on the computer, and if not, you can force it to support using some programs.
"but it will have better graphics on the ps4!1!!1!"
yeah like VERY slightly. your eyes really wont care. just get a good computer build and you can make computer games look so much better than consoles, and you would be CLOSER to the screen!