Everyone will have different opinions on which tester is best, and often the best one is the one with which they are most familiar.
Familiarity can be an advantage as it will speed up testing for you and help you avoid errors in testing.
Simplicity is a good approach as you will be using it often and having to adjust settings needs to be straight forward.
If you search for multifunction tester on this forum then you will find many threads discussing the advantages of different testers, however it comes down to your personal preference (and budget) in the end.
If you list out the tests that you will want to do and the functions that you are hoping to use, e.g. downloading data, bluetooth compatibility and so on and then look for the tester that meets those requirements.
Presumably your budget will also need to cover, multimeters, voltage testers, possibly a proving unit, and depending on your requirements, clamp meters, sound level meters, lux meters, fluorescent tube testers and so on, so it would be a good idea to assess all that your budget needs to cover so that you can then know how much is available for the multifunction tester and work from there.