Hello, for awhile now I have been upgrading all my cameras to HD and upgrading various software that I use to edit with or write scripts on as well. The only thing I haven't upgraded has been my computer. I have searched for awhile about what computer I should get to edit HD videos with and have gotten no real recommendations. I'm aiming for something that is or less than $400, but I am willing to go higher, and has an Intel Core i7 (have read and been told to get an i7). Even though I'm very into tech, I haven't upgraded in a long time, so knowing what I'd need for my HD projects is kind hard to figure out. If anyone has any suggestions, that'd be amazing. Thanks.