Nintendo
Pros- AMAZING first party games. Although not as good, still pretty good/decent graphics.
cons- The most stubborn and out of touch people in existence DX
Microsoft
Pros- Halo
Cons- Other than halo, their first party games aren't very good (To me anyway) and most their 3rd party games are on PS3/4/PC, allot of times the superior version (If you can wait a bit longer for loading screens on PS3) Stupid people in charge trying to make stupid decisions.
Sony
Pros- AMAZING EXCLUSIVES!!!!!! Super fun games.
Cons- Screwed over the dreamcast.
When I was younger, I would say to go Wii/360. But somewhat recently I got a PS3 and got A BUNCH of games for like 10 dollars each and now my PS3 library is the biggest of my consoles. So now I say to go Wii/PS3
For current gen, I will say WiiU/PS4.
Why didn't I talk about PC? Because PC ISN'T a console XD But I do have one con for PC
con- GETS NERFED DUE TO COMPANIES TRYING TO BE FAIR TO CONSOLE USERS!! Recent PC games have been getting worse graphics to make you rabid console players feel better about yourselves >.<