Hey everyone! I've got a question. I'm planning to buy Cactus Remote triggers for my Nikon D60 and Vivitar 285HV flashes. (I'm buying them off ebay) My question is; Are there differences between models of transmitter that i should buy? Because in ebay, I tried searching and I found many kinds. (i.e. Cactus triggers for olympus, sunpak, sigma). and there are also different kinds of receivers. Are there any particulars that i should take note? here's the link BTW. <LINK>http://stores.ebay.com/Gadget-Infinity_Digital-Camera_Flash_Wireless-Trigger_W0QQfsubZ2214405</LINK> and also, do i buy the cactus trigger off ebay or gadget infinity?? It's my first time to buy online. thanks guys!