Nexus one alternatives

Thing is, since t-mobile is rather small, they don't have a large selection. Also, if you're getting Android, you're going to want to get a phone that is going to be strongly supported so you will get updates to your firmware and what not. I think the Nexus One is your best option, it's Google's baby so you know it's going to be support with updates from them, they're the only ones who have Froyo on their phone (the official version).

Thing is, if you look here you can see the plans.

• Nexus One without service: $529
  
• Nexus One with new, 2-year T-Mobile US service plan for new customers: $179
  
• Nexus One with new, 2-year T-Mobile US service plan for qualifying existing T-Mobile customers: $279
  

While it's pretty expensive unlocked, if you want to stick to your phone you might as well just get a contract for a huge discount.