0$ is impossible unless a better version is made (as a deflationary or very low inflationary currency) that gets the same limelight of branding that btc has had. I say choppy rise to 1000-1200, sideways, up to 2300-3000+, a bit down and sideways, up to 10,000, long price crash to 1500, with a average of 3000. (Thats my conservative-grandiose outlook.)
Hyper grandiose model says, 3000 then pause, then 10,000, then 100,000, then huge crash. This model is from looking at how each bull run breaks through 1 logarithmic scale, hits the next one, bounces off downwards, then creeps back up. Take this for example= 0.10, 1, 10 (july/august 2010), then down to 2-3$, then several bumps up to 10, then a bump past 100$, down to 100$ as support, then up to $1000~, down to 100$, up some to (we shall see)?..
Conservative model would say 1000$ will be a bull trap, but I find that hard to believe.