Which IPhone 3G Case do you like better?

Based on trying a few iPhone cases, I would look for an iPhone case that:   -  doesn't have a cover flap.  Lifting the flap every time you use the phone gets annoying -  prevents skidding.  The iPhone can easily skid off a table; you can lose it or, worse, break it.   -  has a screen cover that doesn't reflect or refract light in awkward ways -  has a screen cover that doesn't get dirty easily.  
Many covers may have these qualities.  One combination I have tried and liked is:   -  the "white gel case" at the AT&T store (about $20) -  the "screen protector tri-pack" also at the AT&T store (about $10)

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Apple has done it again with the Apple iPhone 3GS. The company has constantly delivered when it comes to consumer electronics and Apple has yet to disappoint with its latest outings of laptops, tablets, and iPods.And also,most people consider the cheap iphone 4s cases as the benchmark for today's mobile phones. With the launching of the new iPhone 4S, Apple received mixed reviews from its biggest critics. While some were disappointed because its design is exactly similar to its predecessors design, others were completely satisfied with its impressive features and great improvements.

I've been most happy with Z-Cover brand, you can get them in all colors, you can remove the belt clip, they feel nice in your hand too.