Hmmm let's see...
I would probably order a couple of the model A units for completeness and do the rest of what I want to do with model Bs. Not sure how many I could purchase at once though as I am also restocking my workshop (yeah components are cheap but it all adds up). Also buying in stuff I don't already have (older electronic devices for their cases etc) will eat up my budget.
So how many would I require? And this is if they can do what I would like them to do:
4 to fit in-line between my video cameras and a NAS to capture the streams.
2 (one of each model) so I can create a modular system so they can plug into other devices. This will be handy as it would allow constructing systems similar to this:
Between 2 - 4 for other home-based things such as internet radio receiver etc...
And finally... as many as I can so I can mess about with them trying to add new stuff and generally experiment and produce videos/tutorials/etc.
Maybe setup a direct debit option to auto-post a unit or two each week to us?