After reading through the MacBook Pro threads, I'm having a hard time seeing much of a benefit to waiting for a Penryn powered iMac. There doesn't appear to be an appreciable speed bump, however it does seem to run cooler. Are there any other benefits to the Penryn processor that I'm missing that will make this next update worthwhile? Maybe extra L1 cache? *Note: I'm not looking to start a speculation thread; I'm just trying to find some rationale behind the "Wait For Penryn Furor" going around lately.