Please advice which is the best suitable probe available in the market which can work with my new chinese made cnc router. I searched the web and found 3 brands, one from techno works only with techno routers, other two are from Maxnc and shopbot, any idea which one is better?

Scan through this forum and you will find a couple of designs that you can create on your own. For example http://www.cnczone.com/forums/showthread.php?t=28308

Regards,
Sven