I'm no expert yet, but I say try Versace L'Homme. I can't say enough about that one. Check the name carefully though when searching for it... L'HOMME not Man, Uomo, Pour Homme, etc.. It's somewhat debated as to whether it's a true powerhouse, but it's close enough for me. It was the first scent by Versace in the mid 80s, and it is NOTHING like anything else from that house.
Yeah, VC&A Pour Homme is a monster. I almost wore it today. That's a must buy in the powerhouse vein. This one makes you into a walking room freshener. And I don't mean that in a bad way.
Lauder for Men I haven't quite embraced. There's some sort of sage note in it that doesn't sit well with me. I need to give it a more extended wearing really. Someone else can weigh in on that one.
It's pricey and gone. I don't even know if it's considered a "powerhouse" really, but Vintage Tabarome is a real killer. The strongest frag I've got by far. Beats out Kouros.