Dear lily_m;
Sorry!, - your question is too general for a real ‘suitable’ answer.
There are ‘simply’ too much independent variables involved, like knowledge of operator, available instruments, needed precision, environment, etc., etc.
So the method should be to define first your needs and the values to most independent variables, and then you can do a “mental” or other screening to find the most suitable method/instrument.
I hope to have anyway been of help to you.
Good Luck!
ARGOS++