I think it really just depends on the person. I had an edge X and loved it, until I tried the Thunder. At first I thought I'd like all the adjustment options of the edge, but in the end I felt like it complicated things. I love that the Thunder does what it does and does it well, and then I just adjust handspeed and give on the skin. I know in theory you could set the Edge on no give and at the same stroke as the Thunder and leave it be, but I feel like the Thunder is smoother with the needle and less vibration. I use the FK Irons adaptor on the Thunder and it works great for disposables. Both machines are killer, just depends on your style, and how many different machine set up options you like. Just my 2 cents