I'll be giving the Sooloos a try shortly - next week. I've already played around with it a bit.
While it is true that it's a) expensive and b) single purpose (unlike a typical PC) it - like the Kaleidescape - has an incredible UI and just works. It is absolutely lightening fast and very intuitive - really usable by all the family.
I believe the latest issue of TAS magazine has a review - which might be worth checking out for the details on functionality etc.
The majority value of these (K, Sooloos) solutions is obviously in the software/UI. To that end, I'd much prefer it if they offered a solution - obviously at lower cost - that provided just the touch-screen/drive, CPU/controller (with digital out only option) and the ability to store/retrieve from a generic NAS. Yes there will be some customers who don't want to deal with a seperate NAS but I suspect there are very many more who would.
Ideally Sooloos would also support >16/44 & multichannel. I guess this may be possible in the (distant?) future (via winner/successor of BR / HD-DVD?) if the copyright issues can be resolved.
What I'd really like for now is simply the ability to store and play back 24/96 copies I'v made of certain cherished LPs. Will be following up to see if this is possible.
Anyway, if anyone has any questions that they'd like answered re the Sooloos let me know and I'll try to revert.
Paul.