Iphone is a good buy or buy htc touch pro plus ipod touch 3 good?

What is the difference each 1.iphone 1,2,3-generation to generation and 2nd generation, 2nd generation and 3rd generation so to compare ~
problem more carefully answer ~ ~ hope I will be good, then an additional ~ < br /> 4. that the iphone is good if you skip this problem, if no cell phone that iphone plus the availability of high-touch, then please recommend of the budget in about 3000 phone (touch I e already chosen a 64G)
I 20 , college students, the music madman, madman phone, SMS Madman (frequency of use of high to low), because he does not want a heavy back to DE-01 CD collection is completed with the first generation IPOD TOUCH, recent N82 feels like to die another, is the problem here. . . Observation that iphone just fine, but friends say the battery is not enough to listen to, send text messages up trouble, do not fully compatible with MMS, phone call not long (as opposed to other intelligent machine), and htc touch pro feel powerless plus ipod touch 3 iphone to the effort and comprehensive – but also a sense of HTC quite a good machine, but now many iphone 3gs said that performance, I would like to know iphone or used to answer the following questions – I am good I will be additional points ~
3.htc touch pro now how much the price?
5.iphone 3gs What are the specific advantages in the mainland? I now want to use China 3g, 2g card that plugged into the iphone 3gs cost-effective it?
6. If you have for people like me better meet the music, telephone, SMS configuration, please list.
2.iphone 3gs SMS sent up trouble it? Is not without a keyboard made of cool and fast?