Wich WoTLK download (old/no-old)

[nekrory]

Hi guys, so... im looking to join the server and i faced with the download options and there are two WoLKs to choose, wich one should i download?
Im planing to join Lordaeron x1 rate.

[Chablo]

I think the new one has WoD Models. I downloaded the old one and I play on Icecrown realm just fine.