Im not willing to purchase from the US based on customs duty and import VAT, as well as higher delivery and a pain in the ass if i want to return something! I will definitely look at ZTEX again, but i think the guy there was in process of building something new and i cant wait!
In that case, Ztex is probably going to be your best bet. The "something new" was most likely the 1.15y board, released a week or so ago. It has 4 FPGAs on a single board, rather than the 1.15x board which has a single FPGA. I own a couple of 1.15x's, and have a 1.15y on order that should arrive (fingers crossed) tomorrow. Ztex has the best warranty (2 years) of any of the FPGA vendors, and has boards available today, but is slightly more expensive than other options.
What specs are needed motherboard wise, the one you linked looks like it has alot more than is needed? someone else told me about this RaspberryPi, which is like the size of a credit card and only £15! Though, i want something that can run mutiple units in the future
I don't believe you can actually get a Raspberry Pi (they're continually sold out), but it would be perfect if you can get your hands on one. Like I said, all you need is a computer with a USB port that's capable of running your choice of operating system and mining software.