i'm running a ZTW 80A esc with a Turnigy 2600kv motor in my E-Savage. the E Savage is known to stress both ESC and motor, and both run cool in my E Savage with 17/66 gearing. i must say, its a pretty good esc, only that the programming card(i got the esc alone, so no programming card together) is extremely difficult to find.
but from what u mentioned, i'd think that u're grabbing a whole set together, so i'll safely say that it is a good combo. it'll be best if u describe what u're looking at and what u'll be running with.