However, I would say under a loupe, that the finishing on my 5370 is superior to my Dato - possibly not a surprise given the price points and that the 5370 is double assembled by one watchmaker in the high grand comps department (Dato is of course also double assembled).
As others have said, watches on the wrist are very subjective so I think it is time and money well spent going somewhere to try the piece. If you are buying new then your AD might well organise to get a piece in to try, mine did. If going secondary then you will need to put on the leg work. Good luc