So I have owned the Slim, Slim+, Liberty Lite and now the Vortex, which are over the ear. The Slim and Slim+ are fantastic for the price, the plus has better sound quality and a little longer battery life they each have a wire connecting Right to left but BT to your phone. The Liberty Lites were good, for some reason mine never came close to the advertised battery life, which is odd for Anker, but the sound quality is good and the different ear pieces it comes with makes fitting them to your specs pretty easy, but I recently got the Vortex when they were on sale and OMG, the sound quality is out of this world, I tried a pair from a different company, supposed to be Pro Studio quality sound etc. and the Vortex blow them out of the water, for half the price. These are really cool because you can just BT them to your device or they also come with an aux cable and input, I’m assuming to save battery, they fold up nicely and come with a carrying case. So it depends on what you are looking for, sound quality, size, in-ear or over-ear. But I recommend maybe waiting until the Journey U come out, if you don’t like them then at least the prices of the other models should drop, or go get the Vortex now and enjoy the best sound quality I have ever heard come from BT headphones! Cheers!