Re: X32 Recording Hardware Requirements For A New Recording Setup
FireWire is always the better interface for audio. It can work independently of the CPU whereas USB is heavily dependent on the CPU. This leads to lower latency and lower overhead while recording for FireWire. True, CPU's these days are pretty powerful, why potentially box yourself in if you don't have to? Your buying new hardware so get a decent rig with the best interface for the task at hand.
With PC's not all firewire chipsets, nor drivers are created equal. If you are going to buy a PC laptop I would search through audio forums where programs like Cubase or Reaper are discussed an look for those who post positive experience with FireWire for their respective hardware. Just beware that sometimes PC manufacturers (Dell has been the worst in my experience, but HP isn't unknown from doing the same) change out chips mid production even for the same model, so sometimes knowing just the make/model isn't enough to ensure success.
Or, as others suggested just buy a Mac laptop. Even if you are going to turn around and just load Windows on it. You won't have to worry about the chipset or drivers...