Edward, you can't go wrong with Fluke. Unfortunately, I'm not at the point where I would spring for a Fluke DMM - my trusty old Mastech MAS-345 is still alive and absolutely adequate - but if you really want something that will last, do what's asked of and look cool doing it, Fluke is the way to go. I've dealt a lot with their other test tools in my telecom career and I would say if you can afford it, Fluke is an absolutely safe bet.
I would just add a suggestion that perhaps throwing in another $100 and getting an oscilloscope, albeit a lower end one, might actually yield a more useful tool for the money. Dealing with MCUs like Arduino, you would need to be looking at signals and timing more often than levels and a scope is a wonderful tool for that.
Don't let me dissuade you from buying a great DMM though - you still need a DMM on your bench anyway.