I think many times what is perceived as as the "gap" when switching amp channels has as much (or more) to do with the tone or effect difference in the amp/channel as it does with the actual channel switch time. For example, if you're going from a crystal clean amp tone to relatively dirty or high gain tone (or vice versa), there's going to be some sort of audible difference. If you've got time-based effects in the signal path, they're going to accentuate that difference. And if your scene change includes changes to the time based effects as well as the amp, it's going to be that much more noticeable. My first Fractal product was an XL+, and the little bit of latency when switching channels, scenes, or patches never bothered me at all...And I'm fairly sensitive to that latency. You do have to build your patches with the switching in mind (adjusting effect spillover appropriately, etc.), but I was perfectly happy with the XL+. The 3 is even better.