Hey there. I have both the DFX and the F75 Ltd SE. The F75 seems to be a simpler machine to set up, but I do like the DFX's ability to utilize pre-set programs, and tweak, name and save your own programs. I feel both machines have a good variety of coils to choose from. The F75 is super light, but the DFX is not bad at all. I think it would be easier to learn the F75 after owning a DFX rather than the opposite. The F75 can be chatty and part of the learning curve includes learning to listen through the chatter. I'm still getting the hang of that part. I have had both these machines and a Sovereign GT for less than a year, so I am in no way a seasoned user. This is just my newbie opinion and I hope it helps. Keep in mind that swing speed is very important when using the DFX under most conditions. Try your in ground tests again with various swing speeds and see if it makes a difference. I mention this for two reasons. One, that swing speed was an important, eye-opening lesson for me to learn about, and two, I'd want someone to give me the same heads-up. HH. Matt