http://www.anandtech.com/show/3794/the-iphone-4-review/2
Hold back ye ravenous iDogs, I own an iPhone, so you cannot get mad at me!

It's obvious that there's an issue where it suffers in a higher degree than other phones (all phones will suffer from attenuation). The problem being brought up here is how badly they do. The bar levels certainly didn't help as people could drop from 4 bars to 1 bar (using that -24db value from the table and the diagram up a bit higher), which seems like a huge drop.
I also agree with Waggy... it's the arrogance that is such an affront. I went to the Apple store the other day to poke at the iPhone 4 to see if I wanted to upgrade. I just didn't see the point. I set the iPhone 4 beside my 3GS and compared the screens... I barely noticed a difference! The only thing I'd care about after that is the battery life, which I can't really test in the store, but I'll go off Anand's word

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I think I'll just wait to see what comes down the line.