Hello, I am wanting to buy a replacement battery for my HTC Hero and I have some questions. Are HTC Sprint batteries compatible with the European (GSM) version of HTC Hero? If not, how should I search for a compatible battery on eBay? Can I trust eBay sellers who sell the original(?) OEM RHOD160 for just $10/piece? Are there any drawbacks to using aftermarket batteries instead of original HTC stuff? Thanks a lot for your help!