I'll start this review by giving praise to The Production Room, the seller. These guys got this thing dispatched and to my door the next day. If your planning to buy anything related check with these guys first. I even got a text message to say when it would be delivered. Impeccable service.
On to the keyboard. I've seen very few reviews so this might be fairly long. Out of the box the comes with a USB cable. PC picked up drivers straight away and although Reason 5.0 could not find the keyboard, it's easily added. It's very light. And fits into the front pocket of my laptop bag, ultra portable.
I don't play piano or keyboard as a first instrument, I bought it because production is a hobby and I needed a smaller controller for travel. Because of it size, the keys are a fair bit smaller than a standard midi keyboard for instance, the M-Audio Oxygen. Its hard to get decent dynamics out of the keys. One touch normally produces one velocity so for anyone looking for something with velocity sensitive keys or aftertouch this may not be the best keyboard.
The drum pads are assignable and nicely spaced to easy to use. No slipping or miss hits. Again,not very velocity sensitive. The knobs can be used in conjunction with the pads or the keys. I found the lack of a pitch bend/mod wheel to be minor as these knobs can be used for that purpose.
The inbuilt arpeggiator is great. Tap tempo based or duration assignable (1/16 or 1/8T etc.) Also comes with a sustain function. Not as versatile as a VST arpeggiator (e.g. RPG-8 in Reason) but it does aid in versifying dynamics and production. Octave shift is present to compensate for small number of keys.
All in all although it may not be as powerful as other similar controller keyboards (e.g. M-Audio Axiom 25/49/61) but it is a buy I would recommend. Immense fun and really useful to add to any collection of analog or digital synthesisers.