It has been my experience that everybody has a different experience with the same hardware, no matter what it is. Give 10 identical computers to 10 people and they will tell you 10 different opinions as to how well the computer performed.
Yes, I realize that if there seems to be a large number of defective parts on the market of a particular make or model then chances are that it has a higher defective per unit rate. But don't forget that people are also modding their drives, cross flashing their firmware and other things that the manufacturer does not recommend doing.
Then there's my personal favorite which probably includes a higher percentage than most people think, user error. There are so many variable when it comes to computers and why this one works better than that or is faster or slower, etc., etc., that systems that are built at the same time, using the exact same hardware and assembled by the exact same person won't perform exactly the same. One system will be faster, one might have more problems/issues, etc.
I doubt that the majority of the people here are computer experts, most are probably like me who have a fair amount of knowledge of computers and hardware and are looking for advice or direction about a piece of computer equipment that they haven't learned about yet or are here to share the knowledge that they do have.
In no way am I trying to put anyone down so please do not take this wrong. I have found the advice and help on this forum most helpful and invaluable. Just keep in mind that for a lot of things there really isn't a solid yes or no answer, it's based upon your personal experience.
I am very pleased with my OEM 1620 which I purchased in December. I am using the Dangers Brothers RPC-1 retail B7V9 firmware that was modded to add ala42's MCSE (thanks ala.)