Tamrac Expedition backpack

I've emailed Tamrac but so far no reply. Does anyone know if there is a difference between an Expedition 6 and 6X.

Think the 6X has a laptop slot, the 6 doesn't?

Having compared the 5x on their website with my 5, I think the laptop pocket is padded in the x series. I always put my netbook in that pocket on my 5, it fits just fine, but the pocket isn't padded at all.

Thanks. I don't normally carry a laptop so I've gone for the 6, it's also £30.00 less.