Finally getting a smartphone from at&t and can't decide what to get! So I have a couple questions hopefully you can answer. Processor- The captivate has 1GHz Dual-core Tegra 2 Processor while the skyrocket has 1.5 GHz dual-core processor. How big of a difference does this extra .5 GHz make? Also is the Tegra processor somehow better? Network- The captivate has 4G speeds delivered by HSPA+ while the skyrocket has 4g. How much better is 4g and can the skyrocket use 3g networks? Any other huge differences I should note? I don't care about screen size, camera or any of that. Thanks!