ATT, Sprint and T-Mobile – they are all in for the big battle and who wins the ‘Smartphone Wars’ is something that only the next few months will decide. All three phones have some pretty striking features but should they really FORCE their loyal customers into expensive data plans? The Pre and 3G S got some sophisticated hardware and effective cost-wise, Palm Pre wins hands down. The data and texting plans are the ones which make the GSM versions of these smartphones super expensive on a whole. If you are …