3DS, Vita, - Can't see myself buying either of them, ever, honestly. I've got a Samsung tablet, and for whatever gaming on the go I do, it seems sufficient. (Mostly Minecraft Pocket Edition nowadays. I've also heard generally positive things about Survivalcraft, though I've not played it. And for $3.99, why not pick it up?) To carry around something else beyond a tablet and phone I'd need a game -- or multiple games -- that all blew me away. And I just don't see that.
Wii, Wii U, Own a Wii, my son owns a Wii-U (don't live with him). Still play MarioKart on the Wii occasionally since I've not beaten all the 150 cc Mirror courses, but at this point it has basically "bricked."
The Wii-U? Sigh. On balance, I can't recommend it. Wanted to love it, TBH. Can't say I hate it, but, yeah, I'm disappointed...briefly...
+ Backwards compatibility to Wii Games seems to work flawlessly
+ The console tablet can be fun, especially for stuff like the "lite" version of Luigi's Mansion in Nintendoland
- Game availability, and the likelihood that this is only going to get worse, not better, see here:
Wii U (Developer) Kits – Gathering Dust & No FrostBite 3 (link)
...and, candidly, I'd say this is borderline to an absolute deal-breaker in my mind... Sucks to say, but that's what I'm thinking, personally.
- The Controllers - This might just be me, since I know I'm uncoordinated (thanks ASD). Anyway, when I tried to play Lego: City I had nothing but problems with things like driving. To the point where I started to feel kind of sick, as in I was moving the console buttons, expecting to move, but not moving right away. Again, this one might just be me, but it was a problem I had. Big time. FWIW, I also had this problem with the Wii on games like CoD:MWReflex. Games that probably make heavier demands on system resources.
PS3 XBox 360 - At this point? I'd say if you're looking to buy either, buy whichever more of the people you know have. Otherwise I'd call it a toss-up. In my case, I only know one person who owns a PS3, and he's got EVERYTHING. So, I've got an XBox 360, but have never played a PS3. This is probably just an American thing, though. Doubtless in other places the exact opposite is the case.
The graphics are probably better on the PS3, but not that much better
XBLA Gold is probably better than Sony's on-line play, but not that much better, plus XBLA Gold isn't free (I don't have an XBLA Gold account)
The PS3 seems to have slightly lower price point these days, but not tremendously lower
Stay away from the 4GB XBox...My phone probably has more storage, and I can't believe they still sell it that way, but they do. Though I put an external HD on my son's XBox and it seems to work fine, so I guess if you get a deal on a 4 GB model be sure to grab an external HD too
Note: Kinect is just silly, and unless you have a HUGE space to play in a pain to even try to use (as I found out with Kinect Star Wars...most of the fun here was having my son's dog getting picked up as a player by the sensor while I seemed to spend a lot of time crashing into furniture) So if you do decide to go XBox, I'd say buy one without it, and then get one later on if you decide it is something you want. Having a big, nearly empty room to set the thing up in is a big plus as well
PS4, Xbox 720 - I'm thinking too soon to say...but the "buzz" on the Nextbox is so uniformly negative I'd never pre-order one. Plus, the price. Both are rumored to be coming out at somewhere in the $600 range, which is insane. At that price I'd start looking for a PC for gaming, honestly.
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"The man who has fed the chicken every day throughout its life at last wrings its neck instead, showing that more refined views as to the uniformity of nature would have been useful to the chicken." ? Bertrand Russell