I'm not going to BS you here, they are both good amps. Personally I prefer Directed, but then again I have never worked with a hifonics.
First off, you need to realize with that sub it is Dual Voice Coil at 4 ohms each. Meaning the most you can get out of it is wiring in parallel to get it running at 2 ohms. Now you have to match that impendance and the RMS power ratings up to get your best option.
The hifonics has 900-1000 watts RMS @ 2 ohms with .08% THD (that's just what I looked up, whether that's real or not I'm not sure)
The directed has 800 watts RMS @ 2 ohms with .7% THD
I don't know what the peak power for either those is @ 2 ohms but I'm sure they will both exceed 1000 watts.
If you ask me both of those amps are way over kill with just the 1 12w6v2 but as long as the gain is turned down on the amp you should be fine and have some room to pop another sucker in there if you so desire.
So I guess here is the part where I do my little "and if you want to take a look, I have an 1100d N.I.B. for sale"
Naw, but seriously, just think about what I said and evaluate what you really hope to get out of this now, and for the future.
G/L
