Disturbia UK Version Questions

[28BlusLater]

Now that I have a sound system that will make a big difference depending on if it's a Blu-Ray codec or a DVD codec, I want to upgrade my US Blu-Rays to other country's that have better PQ/AQ.

I looked at the ratios posted on each page for the US Blu-Ray and the UK Blu-Ray for Disturbia. I notice that the US Blu-Ray fills the entire screen while the UK Blu-Ray has a different aspect ratio, Im guessing that has the black bars. However, the UK Blu-Ray does have the Dolby TrueHD 5.1 track, while the US release just has DTS and Dolby Digital.

Is the UK import worth getting over the US version? Is How are the PQ and AQ compared to the US release? Please let me know asap. Thanks.