Hate to break it to you, but this thread is over a year old. Chances are, the purchase has long since been made.
Also, though hate to break it to you, but the VL1000 vs. Source Four Revolution has been thoroughly explored in many other threads, both in terms of on-paper features, and actual real-world experience.
Again, sorry
Old threads never die, There just waiting for someone to add there 2 cents