Time for a 'real' Theremin!

Hi All! Enthused by the many excellent articles and posts here on Theremin world I have decided to buy my first 'real' Theremin. Up until now I have been playing around with a basic Jaycar which I can get rudimentory tunes out of but with great difficulty. I am currentlt waiting for an 'ordering window' with Kees in Tasmania - I missed the last one as he only puts the order page up on his website for a short period! He has responded to some of my queries very quickly though and the his Theremin looks very good for the money. I realise that it is based on Jaycar components but my technical ability is not up to task of upgrading my model!