I'd also recommend a laptop. They're more practical - but one have to be careful to choose one which works with OSX86. If not You'll have to deal with problems by writing kexts etc. cause You can't switch almost any parts in it. If i can recommend something - go for Intel. Here are two simple reasons :

- Voodoo is really great - but vanilla kernel seems to be more stable.
- Intel CPUs work on lower temps and OSX86 Cpu Throttling works fine only on Intel ( I've never managed to get it to work properly on AMD, but maybe... ). With this - it's cooler, and more silent.

Oh, and your question #3 - Yes, iPhone SDKs and all XCode apps are working properly.

---

www.ultimae.com
Panoramic music, for panoramic people.

AMD Phenom II X6 3.5Ghz
AMD 990FX Chipset
Kingston HyperX 16GB 1600Mhz
AMD Radeon HD6850 X2 CrossFire
Seagate Barracuda Green 2TB