I'm really unhappy with Adobe. If Apple added a compositing function to Aperture, I'd change over and never buy another Adobe product. I've only glanced at GIMP, and that in the last two days, and I'm traveling so I haven't really had a chance to dig into it. But I'm not a computer guy, and it looks a little techie to me, like you'll have to learn to speak computer to really use it.
Here's a question -- is there a decent compositing program out there, other than Photoshop? Will GIMP do that? That's the only function I need, and it seems absurd to pay a monthly subscription price for something I use six days a year. In fact, I refuse to do it, and since I'm being forced to change, I'm not even going to upgrade my CS5 to CS6; that would just delay things for a year or so. I've just got to find another compositing program. What about Corel? Will that do it?
By the way, I have no faith at all that Apple would ever add much of anything to Aperture -- I think the company has about zero interest in that product.
About Schewe -- I understand why he's been defensive about Adobe, and I've got no problem with it. If Adobe issues what sounds like a semi-ironclad assurance that they'll continue to update stand-alone versions of Lightroom, I'll continue to buy Jeff's books, which I have found to be well-written and quite useful. But I suspect that Adobe won't do that -- I suspect that as soon as the dust settles from this Photoshop move, they'll move Lightroom, as well.
I also suspect that Adobe has made a serious strategic mistake. I think it will pay off for a few quarters, or even a few years, but then they'll start getting in trouble. Adobe now owns the Creative Suite space, but this move creates a real opening for competitors, and at the same time, creates a lot of distrust in Adobe. And the competition won't have Adobe's overhead -- they'll be able to attack in a piecemeal way, with much smaller programs. Adobe now forces you to pay a high price even though you may only use one or two functions in a given Creative Suite program. That's why a lot of people only upgrade their CS every few years -- they don't really need all those new features. As long as you only had to pay a couple hundred bucks to upgrade every three years or so, that's fine, they'd do it. But if somebody comes up with a decent program that performs that needed function, and it's stand-alone and may be good for years...why would you put up with this subscription bs?