What is the goal here?
You have an S3, but say you're trading it in, only to replace it with another brand's version of the car. I am confused. Why not just keep the S3 and not replace the X3?
Anyways, out of the options. I was given a 130i 230i? whatever the hell thing is, as a loaner the other day. For a get around town daily, definitely a great car, but when looking at the actual cost of the thing I find it difficult to justify. It also looks hideous. So if forced to choose between your options, I'd go with the X2 M35i, same car but bigger/better proportions.
The STI...I'm not sure what this is doing here. This, along with the EVO/R/CTR etc, have just lost any attraction for me. I don't want rough around the edges for performance sake nor do I want "HEY LOOK AT ME" wings and other design elements.
I'd suggest something else but I just don't understand what you're trying to achieve. By the looks of it, it seems you need 4 doors and want something with at least some level of driver feedback/engagement. I thus recommend buying a CPO M3 because it costs the same as these stupid things do and is in another league. However, if you need AWD then I suggest CPO S4. or are you leasing these things?...More info neeeded.