The Go about Theremins

Hello Theremin World! I started browsing the web today for an electronical project. I wanted something like a synth but not a synth. Then I stumbled upon the Theremin. It sounded perfect!! Except I don't know where to start!! I found two kits in Australia and I was wondering if anyone could suggust which one to buy and explain differences?
KIT 1- http://thereminkits.com/
KIT 2- http://www.dse.com.au/cgi-bin/dse.storefront/42c0a6a10b2878482740c0a87f9c0746/Product/View/K3015

Also, the project needs to contain a 'mechanical' component, so does anyone know what could be done? Also, i have to modify the kit in someway too...

Any help is appreciated! Thanks guys in advance,
~ThereminKid

It is the same Silicn Chip theremin, and it's not a good idea to buy one of these.
SC theremin is just for fun and sci-fi sounds, you relly can't play a tune in a SC theremin.

What you can do is to order a kit of SC and modify it as suggested by Max.
Max modification page is aviable at thereminworld.com in schematics section
The modified SC is a playable theremin, it's not an etherwave, but still can do something for you! :)

For a beginner, the Paia Theremax kit is also a decent first theremin. If you buy the electronics-only version and stuff it into your own cabinet (could be an old radio, a plastic box, etc.) you can save big bucks. Welcome to ThereminWorld!

Thats interesting about SC.... What type of Theremin is the SC one i showed you and the other one thats $150 dollars..?

I'm leaning towards buying the more expensive one..

If you are from australia you can buy a SC kit (Silicon Chip kit) at jaycar:
http://www1.jaycar.com.au/productView.asp?ID=KC5295&CATID=&keywords=theremin&SPECIAL=&form=KEYWORD&ProdCodeOnly=&Keyword1=&Keyword2=&pageNumber=&priceMin=&priceMax=&SUBCATID=
It's for just 50 Australian dollars

It's the same theremin of your links but costs less at jaycar

Paja theremax is a bit more expencive, but definetly better as far as I have heard around.

Well, I still need to know what type of Theremin they sell at JC and http://members.optusnet.com.au/~thereminkits/ .Should I get the one at optusnet?

They are all Silicon Chip (SC) theremin!
All theremin links on this thread are SC theremin.
And all SC theremin are the same.
So I suggest you to buy it where the price is the lowest, not where it is the highest!

Remember that you need to modify your theremin if you want to play it; if money is not your problem I think you could go for a Paia Theremax or even a Moog Etherwave which costs about 350 Dollars but it's so great!!