I bought best buy's rocketfish droid x case. Soft robberized finish....slim and fits tightly. But, $25 is a bit ridiculous for 2 pieces of flimsy plastic.
So, I made a gamble on a $5 ebay case. Just got it. It's a 98% match to the Rocket Fish...and for over $20 less! I think it's actually better because they provide a fingernail notch to pry it off. Plus, the holes on the back are cut much more precisely than best buy's.
New Black Hard Cover Case For Motorola Droid X MB810 - eBay (item 220643007785 end time Aug-24-10 01:10:28 PDT)
$5....that's more like it!