I know this is the Vapor thread, but since you brought up e13ctron I thought I'd throw my 2 cents in.
I have an e13ctron (the all aluminum, not the hybrid) and I absolutely love it. I get very little signal loss, the case really conforms to the shape of the phone and isn't bulky at all, and it feels great in hand. The best part: customization. With all the different colors, you can really design a case you'll love. Also there's a 15% discount code that'll knock the price down to the $60-$75 range depending on whether you get the hybrid or the all-aluminum. So in effect, you could get a full e13ctron case, plus two additional tops/bottoms for color variety, for about the same price that you would pay for one Vapor case (maybe even a little less).
I don't own a Vapor (though I'd really like to haha), so I'm not in a position to compare it to the e13ctron. All I can say is that I love my e13ctron and if you're looking for a high quality aluminum bumper that isn't as expensive as Vapor's stuff, then you should go for it.