I think that all PC users (of both MS and Apple OS) are in a bit of a quandary ATM. The new Intel Macs are very fast and appear to run both XP and OSX very well. The snag is that we are so close to Vista (and Leopard, if it actually exists) that any expensive new machine must be able to run either of these upgrades well. The only point in getting a MacPro is to be able to run Leopard eventually. It may never be possible to run Vista on it, so it will be OSX or nothing. This is fine as long as Apple actually releases something that is usable, but from past experience it will be a long and painful journey, and in any case it is quite a few months behind Vista.
Which brings me to Vista. I think that the transition to 64bit is going to be much smoother for Vista than Leopard, particularly as many more apps are likely to be ready sooner for this OS. However, there is still going to be a transitionary period where there are likely to be problems from many sources. I personally don't want to buy any more computers until I can run at least 10GB of samples with CPU power to spare. It may seem a dream, but we aren't actually that far away. The thing is that any machine that is future proof enough for this (if it even exists yet) is going to be so expensive that in the long run it would be better to buy something cheap for now, and get something new later, when all the kinks have been ironed out and the PC components are far less expensive.
Which brings me to your problem. I would say that to run VI, it is RAM that you will run out of before the machine cr*ps out, and therefore a relatively cheap PC, followed by a high spec Mac in a few months may be the way to go for you. Remember, the cheap PC can always be part of the farm; it just means that the farm will be bigger when you get your new Mac.
DG
Which brings me to Vista. I think that the transition to 64bit is going to be much smoother for Vista than Leopard, particularly as many more apps are likely to be ready sooner for this OS. However, there is still going to be a transitionary period where there are likely to be problems from many sources. I personally don't want to buy any more computers until I can run at least 10GB of samples with CPU power to spare. It may seem a dream, but we aren't actually that far away. The thing is that any machine that is future proof enough for this (if it even exists yet) is going to be so expensive that in the long run it would be better to buy something cheap for now, and get something new later, when all the kinks have been ironed out and the PC components are far less expensive.
Which brings me to your problem. I would say that to run VI, it is RAM that you will run out of before the machine cr*ps out, and therefore a relatively cheap PC, followed by a high spec Mac in a few months may be the way to go for you. Remember, the cheap PC can always be part of the farm; it just means that the farm will be bigger when you get your new Mac.
DG