Preferably one that does not sound like you're torturing a cat.
If it's 3.5" (full height ok), it spins, isn't crazy loud, I'm interested
Buying from the US will cost me quite a few pennies for an untested one, so if you have a Miniscribe or similar out the back that is on the quiet side - let me know. Will pay extra for a Seagate and/or extra again for 40Mb, but Miniscribe, Fuji, and 20Mb etc are fine by me. Going in to a laptop with lots of drive types (usual 10-80Mb affair).
Just posting quickly before my credit card uncontrollably jumps on ebay.