Fast:
For sure TTar or DNite, probably TTar.
Charged:
I wouldn't attempt ZH/PB Espeon or PC/DG Alakazam because there's a significant chance of you getting a much worse move, and the added benefit of Future Sight doesn't outweigh the risk. And Jolteon isn't important enough to use the charge on.
I'd save the Charge TM, but if you MUST use it, then do it on Alakazam I guess, if you like risk.