Just use an ohmmeter to check continuity from mains cord PE to the soldering iron tip and enclosure chassis.
There's a few different power supply boards used in the stations, some have no ground, others need a jumper, and the latest ones have a PE ground wire and bolt.
Yeah I will but I'd prefer not having to mess with it, so looking for something of which I'll be at least somewhat sure it's grounded.
The only Quicko or KSGER T12 that I could find and is clearly grounded properly is the KSGER STC V2.3 (seems like that's their newest model too). I'll include the product pics of the inside below.
All the other KSGER models don't seem to have a grounding lug to the case. I asked them and they said that indeed the V2.3 is the only one with a grounded case.
As to the Quickos I'm not completely sure but it doesn't seem like any of them have a grounded case.
The tips seem to be grounded properly on all the current KSGER and Quicko models.
I'm torn between the KSGER V2.3, the KSGER MSM32 V2.1, Quecoo 955 (the only Quecoo that seems to have the STM32; it's basically the KSGER V2.1 but with a DC port), the Yihua 948DB+ II, or maybe even the Sequre MSS12 Pro.
I'm mostly torn between the KSGER V2.3 and the Yihua. Though David's CFW does make the MSM32 stations tempting.
The Yihua seems like a more durable model. All the KSGER and Quecoo models seem to have all kinds of issues, but hardware-wise most of that seems to have been fixed on the KSGER V2.3 (grounded case, and the heatshrink seems to not go on top of the mains trace anymore). Still it uses the same handles as before, which all have their issues.
The Yihua handle seems like a good compromise between the large 907 and the smaller handles like the 9051. At least 2-3cm shorter from the solder tip to your fingers and thinner than the 907, but the tip protrudes out more than on the others making it less likely that it would ever overheat.
The Yihua is also certified by 3C, CE, UL, SGS, and ROHS, whereas I'd doubt the KSGERs or Quickos ever getting those.
The KSGER has more functions like per-tip calibration, and a more advanced interface. I don't know if I'll really need that though.