I own a Powercore PCI and I find that it doesn't work that efficiently with Logic on individual tracks because of the latency issue. If you use the "non-latency mode" (by clicking the Powercore insignia in the bottom left corner of whatever plug-in) it ramps up the CPU processing meter, and if you "optimize" the settings in Logic and the Powercore application for better performance (per the TC Electronic website; Optimizing Your Powercore with Logic) you end up operating Logic at very high-latency settings especially for live input recording. For example, the Tubifex plug, IMO, sounds great.....however, it's almost impossible to use it in a live recording situation because of the latency. I understand the purpose of the "Compensator" plug-in but who the heck wants to put it on every other track just to appease one or two uses of the other Powercore plugs. I know you can incorporate it into your Autoload, but for a guy like me who only uses it maybe once in a song, it's not worth it. These days I only use it on the Master Bus (X3 or X5) cause I don't have to think about latency there. I understand that the UAD-1 doesn't even have "non-latency mode"? Seems kinda bothersome to me. any thoughts..... Matt