Given the total crap that VB have been sending out to a lot of customers lately, not sure I'd take the gamble on a new one, if the one you have already is acceptable ...
Keep in mind we're most likely going to hear about the troubled ones over the builds that went well and smooth, just like with all things in life. For what it's worth I've seen a lot of VB's including a new one I did recently that we're totally fine.