The unofficial twice updated Value for Money Table, Chinese bench DMM edition.
Digimess/Grundig DM200 £139 (Farnell) Calibration Certificate available.
Mastech 9803R
4000 Count DCV basic accuracy 0.3% 20A maximum current.
Cat II 1000VDC 750VAC Real Cat II. CE marked. Battery or Mains power.
Rotary Knob.
Mastech MS8040 $119 (Circuit Specialists)
22000 Count DCV Basic accuracy ±(0.05% + 6) ACV ±(0.05% + 30)
CAT II 1000VDC 600VAC
Rotary Knob. USB Possibly an updated 9803R?
Vici VC-8145 $152 (Ali Express)
82,000 count Bench meter. DCV Basic accuracy ±(0.05+5) ACV Basic Accuracy ±(0.8+50) dropping to a not good 5% at high voltages.
Uni-T UT-802 $156
20000 Count DCV ±(0.1+3) ACV ±(0.5+20)
Rotary Knob Manual Range, Mains or battery
Uni-T UT-803 $179
6,000 Count DCV ±(0.3+2) ACV ±(0.6+5)
Rotary Knob. USB Mains or 6 D-cell battery power.
Uni-T UT-804 $273.49 + import duty? (Ali Express)
40,000 count bench DCV ±(0.025+5) ACV ±(0.4+30) 10A max current 600V Cat II and 1000V Cat I.
Adds µA range, USB and 9999 measurement storage. Volts on a separate input jack. Can run on mains or battery.
Rotary Knob
Mastech MS8050 $279 (Circuit Specialists) $244(AliExpress)
53,000 Count DCV ±(0.03%6) ACV ±(0.5% 40)
1µV and 0.01Ω resolution (±10 counts). dBm measurements.
Vacuum florescent dual display
CAT II 1000VDC
Siglent SDM3045X $389 (Saelig - US)
60,000 Count DCV ±( 0.01% +6) ACV±(0.6% +10) 150 readings / second
4-wire resistance measurement
TFT Display. 480x272
1Gb NAND Flash. USB and ethernet, SCPI command set.
dBm, statistics, histograms and trend charts.
Uni-T UT805A $420 (+ import duty)
200,000 Count. DCV ±(0.015+3) ACV ±(0.2+100) —> ±(0.4%+100) at 750VAC
4-wire resistance measurement.
Dot-matrix LCD 256x64. USB & RS-232
Siglent SDM3055 $469 (Saelig - US)
5 1/2 Digits (240,000 count) DCV ±(0.015% of reading + 0.003% of range) ACV ±(0.2% of reading + 0.05 of range) 150 readings / second
4-wire resistance measurement.
TFT Display. 480x272
1Gb NAND Flash. USB and ethernet, SCPI command set.
dBm, statistics, histograms and trend charts.
Rigol DM3058E £435 or $560+import duty
5 1/2 digits over DCV ±(0.015% of reading + 0.003% of range) ACV ±(0.2% of reading + 0.05 of range)
USB, ethernet, RS-232 and GPIB standard.
4-wire resistance
Siglent SDM3065X $729 (Saelig)
6 1/2 Digits (2,200,000 count) silly accuracy.
TFT display
Other features similar to SDM3055
Rigol DM3068 $882 (Saelig) £762 incl. VAT.
6 1/2 digits (2,200,000 count)
Dot matrix LCD
dBm, statistics, histograms and trend charts.
A few links
EEVblog #829 - Siglent SDM3055 Bench Multimeter Teardown - YouTube (3055A teardown)