This is the way I understand this topic. Recovery speed is the time or distance that a machine takes to ID two different targets under the same sweep. I have always called it the machines reflex speed. There are several things that slow a machine recovery speed. 1st there is circuit design. 2nd is how many things does the circuit have to analyze (meters and etc.). 3rd is at how slow of a sweep speed will a machine read a target well. There are other factors, but I think these are the main ones. A machine that will sweep slowly and have a fast circuit recovery time between targets, will normally work better in a trashy environment. This is why I hunt most of the time (not all) with a machine that does not have a meter on it. I put a very high priority on recovery speed where I hunt most of the time. I believe that there is no perfect machine for all types of hunting (no matter what the manufactures say). One of the main priorities in picking a machine is, how much time and effort does a person want to spend before he is proficient a certain machine. Bells and whistles speed up this learning time, but might be a problem in trashy areas. One of the best MD hunters that I ever knew was a person that had been using the same machine for many years that did not even discriminate, but he could tell you the size, depth and possible target with a uncanny ability. Monte could go a lot deeper into this topic than I (I think he already has somewhere). Bill in Texas