Current gen (I don't own any):
PS4: I like the fact that it is less expensive, more powerful, smaller and looks better than the competition offer. I also am confident Sony will support it well and for a long time as they did with PS1, PS2 and PS3. Since this is the console I'm more inclined to buy I will also say something bad, the lack of PS1 and PS2 compatibility and media capabilities on par with PS3 are what is keeping me from buying it at this moment.
WiiU: I really would like to play Mario 3d Land and some other Nintendo exclusive titles, once I can get one for cheap its will be a cert
Xbox One: MS have improved much compared to their initial plans and they are promising very ambitious things. Quantum Break is made by Remedy that automatically makes me interested (the TV show aspect of it, makes me cautious tho).
Portables(I own both):
3DS:It has very strong titles, developers know how to go around its hardware limitations to deliver great games that work perfectly for a portable(something Sony don't usually get). I didn't have DS so its great to be able to play those games as well.
Vita: Its hardware is great, you can fill the quality. You can get good games without paying much in sales and PS+, the screen is awesome I never felt like it need more resolution or anything, some games running on it are absolutely stunning.