Sorry mate, I assume you've created this account for posting your thoughts only, which is good actually. Till now, most of the feedback was pretty positive, especially regarding their customer support, so it's definitely something that they can't control directly and got your order delayed. Hope Burson will read your feedback here, so I'm optimist that others will not face your issue in the future. From what I was reading here on this topic first Playmate got delivered less than couple of weeks ago and Burson announced buyers of a possible delay, so people here expected some delay anyway.
Given the recent feedback from other headfiers around, why don't you keep your Everest, maybe ask Burson for a discount (either on your existing Everest if possible, or perhaps on your next order...who knows) and later post your objective review here. Given the price/performance ratio of this product I guess you'll be pleased, no matter the waiting time. At least give it a listen, then...if still feel like returning it, then that's it, you could buy a Topping D50 + JDS Atom or D50 + Massdrop THX A 789 in the near future (not quite the same price/perf. ratio, but pretty good value after all, with very good measurement figures).