I use my Mac largely for audio recording, mixing, editing, and restoration. I also do a fair bit of HD video editing and encoding. So far I've done this on a high-end iMac with a regular HDD. Although I don't make my living off it, I spend enough time doing this (semi-professionally) that I've been considering switching to a Mac Pro for a while now, playing the waiting game since the current MPs are essentially three years old. While I'm disappointed that the new MP doesn't offer FireWire or an internal ODD drive (both of which would be very useful to me), I realize I could connect external devices, and Apple's claimed performance boosts and USB3 support still manage to make it an appealing offer if the price is right. A wild card for me, though, is the onboard flash storage. I don't have any experience with SSDs, but I'm under the impression that flash-based storage -- for all its benefits -- still has the drawback of limited write cycles and decaying performance over time. Since I do a lot of intensive editing work (as I assume most of the MP's target audience probably does), should I be concerned about this? If I do step up to the new MP, I'd hope to get 8-10 years out of it. Would creating, editing, and deleting files on a daily basis be enough to cause a noticeable slowdown in that time? Or does Apple assume I'll work off an external scratch disk? I suppose time will tell how easy (or not!) it will be to replace the onboard flash storage in case of failure or serious performance drop, but has flash storage improved enough in terms of durability and ruggedness to make it the *only* option for a prosumer machine like this? Am I right to be worried or is this a non-issue?