Originally Posted by sprix!

You should try to toss some punctuation in that post. It would make it immensely more readable. I agree that the cars are different and really play to different crowds. (if that is what you are saying...) Pricing is not really competitive between the two, but performance certainly is. However, since the 135i was supposedly a loser in its comparison with the Z, we can expect the comparison between a Z and a 335i to look even more favorably on the Z. That is because the 335i weighs more than the 135i and will have slightly decreased relative performance.
Even though the 335i may not have the most stellar interior to date, it still outclasses the interior from the 370z. Nissan made vast improvements to the interior of the Z, but it still has a way to go. I personally find that the top of the inside door panels as well as most of the dash is covered in a coarse, cheap feeling plastic. All of the 335s I have encountered don't have any surfaces or panels that feel cheap in any way.
To Alexus, I think you have forgotten that ALL maintenance is included with the purchase of any new BMW. With that in mind, the car looks very attractive to some buyers. Particularly those who only lease vehicles and tend to escape out of one lease and into another before such warranty periods expire. Perhaps the car will be expensive to maintain outside of warranty, but I know of a few BMWs that were regularly serviced and that are holding up quite well outside of the warranty period.
Performance- Z slightly edges out the 335i
Styling is subjective of course
Price- Z wins
Reliability- too early to tell; I would guess both will be comparable
Interior quality- 335i hands down
Resale/value retention- too early to compare; I would guess they will be comparable

It all comes down to money, IMO. If one has to stay below a $40k budget, the Z is a hard car to pass up. If one has a price ceiling that hovers around $50k, the 335i is equally tempting. To be fair, however, there are numerous viable performance options that become available as one sails past the $45k mark. Chances are, the buyers for these two vehicles are not the same, and won't be cross shopping.