Just to say that I built up both the J-Mo and also RJMs other kit, the Sapphire.Both are really good!!!
The J-Mo especially is ideal for anyone starting out as its a very easy build, but you need to configure it for either low impedance or high impedance cans.... and its not easy to change between both. The Sapphire will do all cans, although its a little more involved build, you especially need to be a little more careful on layout and wiring.
Anyway, hopefully we'll have another meet in the future and I can bring these along.