OP, is FWD/RWD/AWD something you're also considering?
I have driven a 2010 TL SH-AWD 6 MT, and it was very impressive. The motor delivers despite being so big and heavy. The interior was sharp, seats were beautiful and comfortable. It was quiet, growled when you pushed it, and the VCM made for great fuel mileage.
The nose shield is still hideous, but if you find one in silver, I think it blends in with the car better.
I personally moved from my TSX to an 07 STi. Like what others have mentioned, it's noisy and somewhat uncomfortable. But if you're planning on putting on coilovers on your next car, I'm going to assume that comfort is not a priority?
The 08+ STi's interior is much, much nicer than the generations before, but still not as nice as any of the other cars you've listed on your poll. Subaru also has its problems. The biggest I can think of right now, the oil pickup tube has a chance of cracking, and if it does, the engine will be starved of oil: catastrophic failure. Subaru hasn't done anything in the last 10+ years to address this!
That all being said, I love the my car! It's unfortunate that it's not as reliable as it should be out of the box, but these can be addressed and I'm confident it would serve you well if you decide to go that route.
Ultimately, any of the vehicles you're considering are all great choices. I don't think you can go wrong with any of them
(I voted for the TL)