Clearly the issue HAS NOT been resolved. Regarding how much of a chance you are taking, the answer to some degree depends on the return/credit policy of the retailer you purchased from.
So far, I have been very lucky. I have not had any of the drive problems that have been so well documented here. I have owned my LVW5005 now for over 4 months. I have updated to the latest FW, have implemented the 3Hr and MV hacks and am overall very satisfied. Mine has an older DDW411s drive, which is possibly one of the reasons I have fewer problems.
But too many have had problems. If I did not already own one, I would not buy one based on what I now know about the experience of others. If your retailer has a liberal return/credit policy I don't think you are taking much of a risk. But I would not recommend that you get into an endless loop of RMAs.
Give it a go, and let us know how you do with it.