So I have been using the old victories (dual colored ones) for a few years now and they have been doing me good. I'm in the process of buying another pair of Nike Victory track spikes and have the option of buying another of the older model or buying the newer model for $100. I did notice there are a few differences concerning the bottom of the shoe but I want to know if buying the newer model would make me run faster than I would in the older model. I managed a 1:54 800m with the old model and have no interest in buying the elites.