Yes, they do. I'm not going to go as far as to say that they sound better than my O2MK1s. They don't, but that's specifically in my rig. If we're going to talk price and value, let's look at the whole picture:
O2MK1 (used) $1300, BHSE $5500, APL Phillips (used) $1300, ICs $60 = $8160.
JH13s (CJ discount) $1000, iphone (had it anyway).
The JH13s come amazingly close to reproducing much what I sold off most of my previously owned gear to hear in the O2MK1/BHSE rig. I haven't yet messed around with different amps/sources enough with the JH13s to say anything about their full potential, but imo, even with just an iphone, I can only think of a couple rigs that better the JH13s in pretty much every area that's important to me when listening with headphones (tone, imaging, attack, etc.), and those few rigs cost thousands more than the JH13s.
I'm with tyrion on that one. Knowing me I'll be curious, but I can't see myself being disappointed in anything that I'm hearing in the JH13s, and as I've said before, when good enough is actually great, I'm far less inclined to leap into that last 10% or 5% or whatever. I'm more curious about source developments, watching technology like the HiFiMan 801 (which I loved at CanJam, but not yet what I'm looking for), to see where that goes, and how to bring out the potential of these little iems, rather than upgrading the iems themselves.