I find shiny brass easier to inspect, easier to find on the ground and more enjoyable to work with all around.
At first I said why bother and just cleaned by hand. Then I found out a good tumbler setup was only $60 total. It was a no brainer for me at that point since I have a free supply of range brass to process at my leisure. My setup is a franklin arsenal tumbler ($41, amazon), pet store media ($12, 50-50 walnut and corncob), nufinish ($7) and kitty litter scoop ($2, I scoop my cases out of the tumbler instead of dumping to save space).
For anyone looking to start tumbling I highly recommend the above setup for its low cost, low storage footprint, ease of use and effectiveness.