T-mobile Sidekick 2008 or LX?

i want a T-mobile sidekick that has a swivel screen because AT&T does not have any of these. So, which Sidekick should i get? I like the 2008 version because you can change the shells, but I don't think you can make custom shells anymore (let me know if you can), but the LX is newer. Please give me a comparison of the 2 phones and tell me which one I should get.