What is the best racing game of simulation and arcade style?

Out of all of the racing games and styles(simulation and arcade) which of each style is the best ones?

Which ones have you played and which ones would you like to play.

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My fav racing games are offroads like MotorStorm, FUEL and Dirt. Simulator on PS3 I only played GT5/GT5 Prologue and those games are superb. Arcade is my least favorite racing style, but I thought Burnout Paradise and NFS Hot Pursuit were quite good.

For sim racing I think its the Gran Turismo series. For over the top arcade racers, I like Blur and Motorstorm. For something more in between I go with Need for Speed, mainly the games outside of the Shift series, but I like those games for being not too much of a sim like Gran Turismo.

Sims are GT5 and F1 2011 on the hardest setting with no aids, I haven't tried F1 2011 on PS3 (I have PC version) and it can be hard at times.

For a driving sim, I really liked Need For Speed Shift and Shift 2 Unleashed. With both you have to turn all the driving aids off if you want a simulation experience. F1 2010 is also great (and I imagine 2011 is a little bit better).

For an arcade game I loved Motorstorm Pacific Rift. Grid was also fun.

GT5 sim

NFS, Burnout Paradise arcade

I don't know where it would fall (I'd call it more of a sim but I'm sure some GT purists would jump down my throat) but my top racing game is Dirt 2.

Top Racing sims would be Gran Turismo, Dirt series, and F1 2010/11

Top Arcade racers would be Motorstorm, Modnation, Need for Speed anything

For me,
Sim: GT5, Dirt 3
Arcade: Hot Pursuit, Most Wanted, Burnout Paradise

If I didn't have a big backlog of games, I would have purchased Dirt 3 for $14.99. I haven't tried it but I hear good things. It is still on sale at best buy and you could even get it online. I think Split Second was selling for $9.99 but that isn't available online anymore. I have that game and it is pretty good especially if you like crazy car crashes and enviroment interactions.

My favorites are the Forza series and the Burnout series. Used to love the old-school Need for Speed games on PS1/PS2, but I thought the new one was garbage.

Midnight Club LA was my favorite arcade racer this gen. Gran Turismo 5 for simulation and Dirt2/3 for a mixture of both

Simulation: Forza 3 (Know it's the PS3 forums, but still...)

Arcade: Burnout Paradise maybe?

Burnout Paradise by far the best arcade style racing game I have played. I just purchased Shift 2 off of eBay so can't wait to try it out.

Sim = GT5

Arcade = Wipeout HD / Fury

Sim GT5

Arcade Dirt2