This is the one I bought. It has the 150 mA minimum requirement. I've been using it for a couple months with no problems.

http://www.ebay.com/itm/Hosa-LVA-507-Guitar-Effects-Pedal-2-1mm-Center-Negative-9V-9-Volt-Power-Supply-/131524319942?hash=item1e9f75dac6