I was PM’ed this question. I didn’t have an answer because the SFX is on on my wants list, as is the SR-71 and I think the Revolution, as well as the Theory.
Each is amazing in their own way. It all comes down to preferences.
I will say I do play my DM2 way, way too much, but hey, I still like it. People know my collection is full of high dollar goodies, and yet, I still enjoy throwing down very affordable yoyos.
I would suggest:
Look the shapes of what you’re looking to purchase, and compae that to the shapes of the yoyos you really enjoy. While that’s not really a great way to make a decision, it may help you narrow things down a bit. By being similar to what you enjoy, I think that may increase your odds of an ideal pairing.
Now, nothing against the SFX and other stuff I mentioned I want, my priorities are with other items, those being metal yoyos. These YYJ models are ones I’ll buy on “slower months” where I can’t find anything else I really want to get.