This seems to be a popular topic so I figured I would share my experiences with the two. For starters I recommend these to EVERYONE who uses an open trailer with a gate. I have back problems and I am pretty sure they started from lifting trailer gates all day. I have bought both the backsaver (thebacksaver.com) and the EZ-gate (ballard-inc.com). The EZ-gate was $169 plus shipping and the backsaver $199 plus shipping. The Backsaver: Nice unit, I like its compact size and one piece design. I don't like the fact that its a painted unit (rust), it makes noises over bumps with the window down (spring vibrating). Lifts the gate (4 foot) well but the EZ-gate lifts a little better, could just be adjustment not sure. I think it has a slightly smaller spring than the EZ-gate. EZ-Gate: Nice unit as well. I like its stainless steel finish (no rust) and it has a plastic insert to prevent spring vibration over bumps. Not quite as streamline sleek looking as the backsaver. Has a slightly larger spring and provides a little more lifting help than the backsaver. Again this could be adjusted differently but I think it is because of the heavier spring. Bottom line: EZ-gate wins. Price is less ($30), installation is about the same on both units, but the EZ-gate will resist the weather better and does not annoyingly vibrate like the backsave does. Picture of the EZ-Gate to follow, will post the backsaver pic also.