I don't think there will be a problem with the Seidio not lasting . They put out a good product (even with the slight exageration of battery capacities) and have absolutly amazing custom service and support . Even if you had a problem they'd replace it within a year, no questions asked.
You won't be sorry with the Seidio . I"m probably gonna sell mine and I have a black silicon case moded to fit the back I'd sell everything for $45 if you're interested . Also have a Verizon extended attery I'd sell for $35.. I'm getting the Fascinate so I'm going to sell off all my acessories
hey, thanks for the offer. i will consider it. how much taller is the 3500 than the 2150?