Looks like you could be sorted out now but i'll add my two pennies worth in case some one else comes along like i just did.
I'd go for a 25amp Plush ESC from Hobbyking as it's a touch more amp's than you need but won't hurt any,plus there a good ESC with out a doubt because i've been using them for a few years now and mine have all stood the test of time.
If you don't want to go with 25amp's for any reason the HK Turnigy 20amp ESC is ok too,i've only ever used that one in a couple of planes but it does what it says on the can so no complaints there.