Should get a T-mobile Iphone 5?

I'm so tempted to get it but it's running on 4g not lte.

If you want 4g lte, don't get an iphone 5. 4g lte is much better. I suggest the gs3

The iPhone 5 is really not a good device. It's significantly slower than similarly priced Android phones, and as you said, it's not an LTE device. 4G is already outdated and slow. Consider the Galaxy S3, Galaxy Note 2, HTC One series, or Droid DNA (if that's available for T Mobile); or hold out another month or two and get the Galaxy S4, which will be the best device on the market when it comes out.

Only get it if T-Mobile LTE is in your area. Anything lower is a waste.