Also, I wonder how long it's going to last before the meter blows its mVolt range ADC:
I don't understand this statement in the manual:
3.At millivoltage measurement mode in order to obtain DC+AC function , the input terminal o ADC do not employed coupling capacitor. Therefor please never apply more than double the dc or ac voltage of the rated value of this range.
Of course DC or DC+AC measurements are not AC coupled, and what does a coupling capacitor have to do with the maximum allowed AC voltage? Is this the result of the Engrish translation?
If the 80 mV range can only tolerate up to 160 mV, then this should be something to watch out for. Especially since the input is labeled just max. 1000 VDC / 750 VAC, CAT II 1000 V.
Mediocre? Does any of your meters have 10 digit frequency resolution?
Quantity of features does not equal quality. Admittedly your are probably the only one on this forum with access to this instrument, so the only information we have available is a few pictures and a crappy manual. According to the manual the 10 digit resolution is only for frequencies above 10 MHz with the high frequency accessory, is it included or do you have to pay extra? Too bad they didn't include a decent crystal oscillator time base, accuracy for frequency is only 0.05/0.1 % + 5 counts (so those other 5 digits are mostly for show). They don't have the power constraints of hand held DMMs.
Oh how about 8Gohms capability?
The manual just states larger than 80 Mohm. Do they specify accuracy anywhere? Interesting how the accuracy for the lower resistance ranges (0.3% + 5 counts) is much worse than DCV accuracy (0.05 + 5 counts for most of the ranges). On good meters these figures are usually quite close.