Has anyone used a Boost or PhoneSuit battery case?

[Allesandro]

I need to purchase a battery case for my new iPhone 4s and there are two that have caught my eye: the Boost Case which sells at Amazon for about $46.00 (or the Boost Case Plus for $60) and the PhoneSuit Elite for $79.99. Can someone recommend one of these, or another, especially if there is no signal loss with the case? Thanks!

 

[vietalogy]

Just bought the boost and will be returning it because it does not fully charge my iPhone. I'm thinking of getting the phonesuit next.

 

[Rockdog97]

Just bought the boost and will be returning it because it does not fully charge my iPhone. I'm thinking of getting the phonesuit next.

I don't believe these types of cases are intended to be used to 'recharge' your phone as much as provide extra battery capacity...