The quest for the best meter when ive bought the Gossen 28s and 29s was to have the highest resolution available, sturdiness and stability over aging / time, in my country Canada Quebec they dont cost too much when calibrating them, sure they are rare has hell, tried the more recent metrahit series, one word erk they dont even come close to the old series of metrahit 28 29 and 30 models. the biggest drawback are the accessories, the usb or rs232 interfaces are more rare and pricey too ... the clean and good Gossens sell often as 300 - 500 $ usd range, was lucky to find them aroun 250$ each, but the interfaces costed me a fortune (400$ just for 2x 232 and 1x usb interface)
The most wanted feature i want is one dc range and one ac range, absolutely no mv range, i measure tons of testpoint voltages between few millivolts and 20 - 30 volts ... that was my first search.
Had high hopes for the EEVblog gw121, still waiting for the troubles to get solved over time and new batches produced..
I had the chance to find a Fluke 189 because i needed one more meter, i love the fact you dont totally open the meter case to change the fuses and batteries, if i can buy one more ill do it right away, They are found in the 200 - 250$ usd range, ir interface around 100$ usd
Ive seen Chauvin Arnoux "AKA Metrix" top models, i personally hate the leads positions and flip look a like startreck casing, but they seem well built and precise, calibration procedures and price unknowns ...
I had Brymen 857s model, very good and fast, i hated the casing of the 869, and the tilt stand wobling. But stop telling its an 500k count, its a real 50k count with an 500k enhanced count in very few functions, sell around 175 - 280$ usd depends where you buy them, ir interface around 100$
Had in the past an Mastech 22000 count model, with easy fuses and battery acess, it was well built too, under 100$ usd, bargain at the time on DX
Tried the fluke 28x of a friend, hated them, too high priced ...
Uni-T blah, very few models a worth to buy... prices blah
If you new at this : stay with the common and reliable brands, thoses who are tested by the eevblog members, the teardowns, the encountered problems ... the parts disponibility if sometimes needed, flukes are the luckyest one of the loot.
Ex : syba fuses cost a lot each, the flukes ones are very good and lower priced ... 5-8$ instead of 10-30$ original syba fuses.
Brymen have a good cost quality ratio, check for the S versions they are more recent and have better backlight, i would go for them as a start, calibrations procedures are known here and are available, Fluke and Gossen need special softwares, dont know for Mastech...
Some Keysight are pain in the @%*( to change fuses, calibrations price and procedure
i dont even check them, prices 200 - 350$ usd
here's my 2 cents of experiences. pricing is relative, they change and varies a lot Alixpress, DX, Ebay ...
My best meter would be an Fluke 8846a in an portable dmm case .... loll