I've owned the DPA's and currently run Nevaton MCE400's > Tinybox.
Even if cost was no object, I would go with the Nevaton's over the DPA's (if those were my 2 choices). I have heard people say the same about the Countryman's (vs. the DPA's).
From what I understand the Nevaton's are slightly more directional, which can help cut down own close talkers in stealth situations.
I think you can have the Countryman's terminated to a mini XLR that will go straight into the Tinybox which will make for a pretty small rig.
The Nevaton's require that you keep the regular sized XLR's on them so you'd have to run a pigtail mini XLR to Female XLR (x2) to connect to the Nevatons. Larger, but I have no issues running this.
Can't go wrong with the DPA's. I loved them, but I just don't think they are worth the extra money, and like I said, I like the less expensive Nevaton's over them regardless of $$$.
The Nevaton's just sound more full to me.