The DV 17D3 is at the lower end of the stated range for the Clarify arm. As you note, it can be a tricky set-up because of the super-short cantilever, but the results are worth it. You could consider the XX2 Mk. II; it is only a bit above your budget range and a dealer might be willing to work with you on a trade-up. It does have higher mass and the longer cantilever also makes it easier to align, IMO. I'm very happy with mine and feel the bass is about the same and the mids are better than the 17D3. My 2 cents FWIW.
Good luck & happy listening!
Good luck & happy listening!