If it were my choice, I'd just choose a good, less expensive, PC with Windows 7, when it's available. Some places are already offering the W7 upgrade now. If there's no rush, I'd just wait until it was built into the PC, rather than upgrading from Vista later. Supposedly it'll be an improvement over Vista. When I was picking a laptop, I was advised to stay away from Dell, and to get more RAM because of the heaviness of Vista. I took that advice and never had a problem with it. But if it's a curiosity thing, then go with a MAC.