Yes I'm looking to use the laptop with an RME interface of some sort... I'm hoping I might be able to use my existing Multiface 2 with express card, in fact...
It's possible I might be using the computer live on tour, hence I need to achieve rock solid performance and reliability. Even a tiny extra edge offered by better disk performance is of interest.
Thanks for the comments re. the system drive, Exalted. Could there be a potential advantage in terms of long term reliability, at least, in using an SSD for system drive?