It is an Opus 200. I would say it generally reads .01 ohm higher than the ipv4 does which makes me question the IPV4s accuracy. Thank you for pointing that out, I'll go read that thread. I'm hoping this issue is limited to the Hanas.
Also,
What is everyone's understanding in the why there is a range of prices for the Protovapor XPV? Looks like they have options like that belt clip which I would want to avoid.
All XPVs are built to order. The lower price is without edge guards or delrin covers, either of which adds $5. The 510 and clip options are all no charge.