I love my DPA Omnis--what a gorgious open sound. For day in day out taping, the mk4s beat everything I've owned, and do buy the best seats I can. You are not going eyeglass them, so it has to be open or a hat rig of some sort.
The N-Box has some drawbacks, but nothing that you can't work with. It has a voracious battery appetite--so what? I load it up and yeah, change one set of the batteries after about 4 hours. Its fine. If its a crucial tape, I switch them all out. I've probably spent $30-50 for the ticket, another $20 bucks on drinks or intoxicants, $10 for parking and $5 for gas. Sheesh, do you think I'd blink at another $5 for a fresh of batteries? I hit the crapper and change them out.
PM me and I'll send you a couple tapes or do a search on The Dime for Ed Tyre's stuff or mine.