I have a Radio Shack that I'd swear is a Fluke. Repainted. And I got it at fire sale prices too.
If I were a pro I would stick with the professional meters. The two may well be near identical in appearance and function but as a trained electronics person I know that you can get a resistor (Just as an example of one component) with 20% tollerance, that is a 100K resistor may be 80k, 120K or anything in between, Or you can get it with 10% (90 to 110 K) or if you want 2% or even 1%.
Of course the smaller the tolerance range the higher the price.
And that is only one of the differences between a top quality and a bargain basement.
That said: I usually use the Bargain basement,, Why, cause it is good enough for most work, If I need accuracy I grab one of my better meters. And I can always parallel (or series) connect the two and compare readings.
