This is a review comparing the Scosche MAGWSM2 MagicMount Suction Mount for Mobile Devices and the Car Mount - Diateklity Universal Magnetic Dashboard Car Phone Holder - Fits iPhone 5/6/6 PLUS, Samsung Galaxy S5/S4/S3/, Note 2/3/4, Nexus 5, HTC, LG, BlackBerry etc. (Black). Two devices doesn't make for a comprehensive survey, but the comparison may help other readers get an idea what to look for or expect from other competing devices.Range of Motion:The Diateklity uses a standard ball joint to allow adjustment in all directions, though the range of motion is somewhat limited. The Scosche also uses a ball joint, but the head's stem is curved to allow the head to hang "over the edge" farther on one side than the other. What's unique about this is that by spinning the head 180 degrees in the ball joint you can choose which side you want the head to hang over farther. This gives the Scosche an incredible range of motion -- nearly 150 degrees in one plane vs. less than 90 degrees for the Diateklity. See my double-exposure photo for an illustration.The Diateklity's restricted range of motion may limit where you can mount it, while the Scosche has enough adjustability to accomodate mounting on surfaces of any orientation.Magnets:The Scosche has a stronger magnet. Under the bouncing and jarring of my car's motion while driving down the highway, the Scosche mount holds the phone in place better. The Diateklity magnet allows my phone to slip a little more often, and I occasionally need to reposition the phone on the mount's head. My phone is a larger-than-average 5.5" phone in a case of 0.05" thick rubber, with the mount's accompanying steel plate inserted between the phone and the case.Your results may vary, depending on the size/weight of your phone and where you put the steel plate. The magnetic bond would be stronger if the steel plate is glued directly to the back of the case instead of inside the case, where it's another 0.05" away from the magnet.As an experiment, I tested the strength of each mount's magnet with my Garmin GPS placed on the phone for extra weight. The Scosche magnet easily lifted both devices, while the Diateklity magnet could not. Again, your results may vary, but the point is the Scosche has a stronger magnet.Suction Cups:Both mounts use a suction cup made of a pillow of soft, sticky gel. I'm not a fan of this gunk, and much prefer the hard vulcanized rubber suction cup on my Garmin's mount.The sticky gel does make a stronger bond, especially on textured surfaces, but it's too strong. It's difficult to pry off, and can damage your car's dashboard. There are numerous reports from other reviewers that the gel also melts in hot weather and turns into a sticky goo. That can ruin your dashboard if you had one mounted there. I did not have the opportunity of testing in hot weather, but I can easily believe this soft gel will melt.The hard rubber of my Garmin's mount doesn't hold as strongly, but if the rubber is moistened and mounted on a smooth surface, it will easily hold for a couple months before letting go. It doesn't mar the surface, and I don't mind reapplying it every couple months.The hard rubber suction cup doesn't hold on a textured surface, though. (Garmin provides a smooth plastic disc with double-sided tape for those installations.) The soft gel suction cups will mount to a soft or textured surface, but they aren't kind. After just two days, they left a "hickey" on my dashboard when I removed them. I'd hate to think what mess they'd make in hot weather.