Unless you want to pay a price premium, then one from the chinese dealers is the best option.

I've looked at them for a while now, but I keep ending up spending money on other things!
The advice I received from somebody in the know, was get an A3 size blue and white one of ebay, from whatever seller is having them shipped out a portsmouth warehouse (means you don't have to worry about customs fees).
The A4 ones although cheaper, are nowhere near as good, due to a fixed table height and coming with Moshidraw which at the time was pretty rubbish. I got that advice a bit over a year ago, so they might of improved it, but I'd doubt it.