Off-Contract pricing for the Lumia 900 and Titan II

We have just received word on the off-contract pricing for the new AT&T Windows Phones and it's not too bad.
Just to recap, the Nokia Lumia 900 will launch on April 8, 2012 for $99 after two year contractual discounts. The HTC Titan II will also launch on April 8, 2012 for $199 after contractual discounts.
Should you choose to get either Windows Phone without the contractual discounts, the Lumia 900 will run you $449.99 and the Titan II will be running $549.99.
The off-contract pricing gives you the option to enjoy a new Windows Phone without worrying with a two year commitment or if you're in the middle of a contract and don't qualify for an early discount.
All the while leaves us with one question. Which to get? Titan II or Lumia 900?

source