The big obvious difference is that the Vaporgenie is a vaporizing pipe and portable while the aromazap is a plug in, non portable, vaporizer.

I've never actually used a Vaporgenie but I did have an Aromazap for a while. The Aromazap works pretty good. It will get you very high and, since it is a convection vape, you'll use less weed to get the desired effect than if you were smoking it. It is definitely a huge improvement over something like a BC Vape or a Blue Meanie.

There are a few drawbacks to the Aromazap though. First, it takes a long time, like 45 minutes, to heat up. Second, the bowl is really small so you need to pack it a few times during a session. Lastly, because the mouthpiece is so short, the hits tend to be a bit hot and harsh.

My advice to you is to spend an extra $40 and get a Vapor Brothers Vaporizer. They're $149 delivered from Vapor Warehouse http://www.vaporwarehouse.com/store/shop.php?p=vb.html
This is what I'm using now and it's awesome. It only takes a few minutes to heat up, has a decent size bowl, and a long whip/mouthpiece so it give huge smooth hits. Take my advice, you won't be disapointed with the Aromazap but you'll be much happier with the Vapor Brothers.