I've got an EVH Flanger actually been using it for like a year or two its actually a very cool pedal! Basically its a regular MXR Flanger with the added little switch that gives u the instant airplane overhead "Panama" type EVH flange tone along with the EVH crazy paintjob.
But I like it and I play around with it alot to get some crazy warbly more phaser type sounds I would recommend it but the Hartman sounds really amazing too. All depends on what you want but I can say the EVH is very nice.