| I had an R reg ST2 and now have a 51 reg ST4s and I find the ST4s much, much smoother and would not go back to the ST2. The 4s has also (tough wood) been 100% reliable whereas the ST2 wasn't.
Having done a track day on both (at Castle Combe), I much prefer the 4s there as well. On the ST2, as mentioned above, it runs out of steam around 7k whereas the ST4s just keeps going until about 10K.
So another vote for the 4s. However, the ST2 is a hell of alot cheaper. But if I was in your position and you're thinking of changing, I would look at the 900ss. Cheap as chips, easier to work on, smaller and lighter than the ST2.
Chris
Edited to say - my ST2 was silver and the 4s is red so that may account for the performance difference!! |