The Novak receivers requiring crystals are more expensive than the RS300 crystal-less receiver? Even the Novak XXXtra receiver (also crystal-less) is a mere $10 more than the JR equivalent - both are right around $90-100. Everywhere I've looked the Novak receivers requiring crystals (e.g. Novak XXL are only $60.00).

I use a cheapo JR 133 receiver in my second buggy and it works just fine with my JR XS3 synthesized transmitter. It's a cheap alternative to buying another crystal-less receiver. Basically any JR receiver will work as will the Novak's - as long as you set the transmitter to match the crystal in the receiver.

-SlingItX