I won't be doing this for a very long time, but I am wondering what the advantages and disadvantages are of getting a brand new Mac and either: a.) Restoring to a Time Machine backup from a four year-old Mac that is showing its age. OR b.) Setting it up as a new Mac and manually transferring over all media, data, and applications. If I restore it to a Time Machine backup, will it perform about as well as the four year-old Mac I'll be restoring it to (not including hardware advantages)? Or would it just be better to set it up as a new Mac and manually transfer everything over? Thanks.