If Riot ever do a second game, everyone should be hype.

The quality of LoL, the responsiveness to concerns, the fast pace of balance and bug patches, and the willingness to design and redesign are identical to 90s-early 00s Blizzard.

Um tons of studios?

343i
Naughty Dog
Bethesda
Irrational
Ubisoft in general
Epic
Sony Santa Monica
Guerrilla
Lionhead
Turn 10
Nintendo 1st party
Sucker Punch
Dice
Infinity Ward
Square Enix
Bungie
Rockstar
Black Tusk
Valve
Bioware
Gearbox
Crytek

And that's off the top of my head. Every one of those developers are capable of releasing high quality titles

Rising star
Grasshopper
Platinium
Retro
Ganbarion
Intelligent systems
Atlus
HAL lab.
just to name a few

I hate GTA yet I support Red Dead and LA Noire. Despite me not liking Rockstar's largest franchise, you cannot deny the Rockstar will continue to pump out quality titles.

Valve, Naughty Dog, Blizzard and Bungie will always be top tier quality.

BioWare, Bethesday, Eidos, Rocksteady, Platinum, Irrational Games, Epic, Guerilla Games, Sony Santa Monica and many more will continue to pump out quality titles enjoyed by many.

Arkane Studios is one I'm keeping my eye on. Dishonored was superb, and I look forward to whatever they have in store next.

My picks are.

1) Blizzard, Diablo 3 on console has a chance 2 be a great hit. And Starcraft is going great, not 2 mention there will be expansion packs for D3 on PC and Playstation.

2) Rockstar, GTA is looking solid, and Red Ded was great.

3) Activision, Call of duty has a horrible single player but the multiplayer is loads of fun and I think sells on that alone.

4) Naughty dog, The last of us is going 2 be great. Naughty dog take there time but make solid games.

5) Sony Santa Monica, God of war series is solid and Im sure they will be out with a new IP soon.

Falcom
Gust
Namco Tales studio

The only developers I look for is ATLUS, NIS Amercia, Namco bandai, Idea Factory, Compile Heart, Sucker Punch, Tecmo Koei, Nippon ichi Software, and a few others. (And now Square Enix cuz of FFXIV and another FF for PS4) so them are the DEVS I look out for.

Rockstar~ good like always
Naughty Dog~ always pushing PS3 as best as they can, and create great games at the same time
Criterion~ Burnout paradise nuff' said (old but excellent game)
Quantic Dreams~ make some of the most unique games ever
Ubisoft~ AC4, Watch dogs, Far Cry 3 etc.
Media molecule~ LBP and there new game for Vita
The people who made Ni No Kuni (don't know who made it)

Just some of my favourites

Naughty Dog - When have they made a bad game?

Insomniac - Their new IP looks kinda bad though

Sucker Punch - Probably more Infamous stuff coming

Bethesda - Fallout, Elder Scrolls...My favourite developer probably

Respawn Entertainment - Should be a AAA FPS franchise coming from them

Bungie - New FPS coming

343 - Did a nice job with Halo 4

Rockstar - GTA5...among their other good stuff

Guerrilla - Killzone 4 launch title for PS4?

Media Molecule - LBP

Turn 10 - Won me over with Forza 4.

Polyphony - Hope GT6 is better than 5

That's top of my head, sure there are more. Too bad Zipper sucks now, I used to love SOCOM.