Thanks to everyone who replied, i've decided to go with Fox Electronics
that Kalle Pihlajasaari recommended.
They are VERY helpful and don't require that you buy specialized
frequencies in bulk. I am getting 2 free samples of their JITO devices,
and are about 15 dollars each in lots of 10.

Their web page is  www.foxonline.com

Thanks again, i've kept all the e-mails sent to me just incase i decide
to go a different way.

John