Yes, their stock Oxygen OS ROM is quite stable and you should be perfectly happy with it, there's a pretty good community around it even if CyanogenMod were to completely vanish too.

OnePlus has had some build quality issues when they were first setting up their supply line, but lately I've had very good luck with their devices. Great specs for cheap, like the Nexus line used to represent.

Excellent, thanks for the clarification. I'm looking forward to making this my next phone. Cheers.

Only OnePlus One came with Cyanogen. They have released 4 phones since then.