Oh, further to my post on How is OS4 - I have a Sam 440ep too.

I don't use it as much though as my A1 is more powerful, but it's an incredibly nice piece of kit. Mine's got a 30GB SSD hard disk on it so it's practically silent - a very neat little box. It's a little sluggish occasionally (mine's 600MHz) but I think the the 460 will be better, and even the 440 flex would be.