Got it hooked up Saturday on my VFL 150.1 (running at 2 ohms since the alternator I bought wouldn't fit) and i love it.
Running stock alt, big 3, XS D3400 and everything is going good (no smell from the subwoofer, sound quality is great, amplifier is refusing to get warm let alone hot, and its very loud).
My headunit goes to 35 volume and I usually don't have to turn the volume past 22 (by the time I hit low 20s everything in my car is rattling).
My original plan was running the VFL 150.1 at 1 ohm with an aftermarket alternator and a slighly bigger battery but I might ditch that (it's getting very loud on my current electrical and the sound quality is good).
I don't think I can justify the price tag to jump to 1 ohm (replace the power/ground wire, pay $400 and hope the alternator company does it right this time, buy two more subs, and potentially upgrade to a slightly bigger battery). Even after selling my current subs/battery it would be near $1000 out of pocket