Side by side I still have to favor the OB-5.
I tend to really like the Neo 3 pdr, planar magnetic, tweeter better than anything else out there.
The OB-5 only comes with the top notch crossover parts like Sonicaps, Mills resistors, and foil inductors. That adds even more to the detail and resolution edge.
Since the OB-5 is ported and the X-Static is sealed, the OB-5 also plays a little lower.
If building it is part of your fun then the OB-5 is the only way to go. No kit out there in that price range will beat that speaker.
However, the soft dome tweeter in the X-Static is no slouch. It is one of the best soft dome tweeters that I have ever worked with.
Parts quality in the X-Static is not bad either. All inductors are air core OFC copper, caps are all poly caps and there are even some Gen.2 Sonicap by-pass caps in the tweeter circuit.
The sealed box design of the X-Static doesn't allow it to play as low, but bass is really tight and clean and easily mates with a sub.
If building cabinets is not your forte the X-Static saves you from the dirty work.
As far as completed speakers go I know of nothing under a grand that can touch the X-Static. Hey, it is an open baffle design, three way, speaker with top notch drivers and a really accurate response starting at $699 a pair. What more could you ask for? They even look really good. You can always upgrade the caps in the crossover and line it with some No Rez to take it up another notch and still be way ahead of the game.
My prediction is that the X-Static will have a really good year and be a standout speaker in a line full of bang for the buck standouts. This one is a real favorite.