I know the Hawk DTC60-70 have plenty of bite even when cold and I like this in a track pad. The problem however is that when used on a street car the pads will not get to a tempature where the pad is easy on the rotors. At colder temps they are extremely abrasive and hard on rotors but when used at the correct operating temp have proven very friendly on my StopTech 355 kit.
There are some pads which are downright freightening until up to temp but the Hawk stuff isn't that way. They will squeel like crazy however on the street (pad deposits wear off). LOL!