Although I can't tell out of my own experience,
folks here in Germany seem to be pleased with "YGE" ESCs,
Unfortunately, their pages and Infos are only available in German
But since they got some quite fancy stuff ("HV", High Voltage ESCs up to 150A, i.e. the 150HV FAI, http://www.yge.de/artikel.php?search=yge150hvfai
for "just" 299 Euros (YGE 80 HV = 229 €, YGE 100HV = 229 €),
it might be worth to take a look at those.
229 € would be equivalent to about $304 US.
In case you'd be interested and needed some translation services from German to English, I'd be happy to help.