Lol I've had 4 Lumia 928's myself, all but one with a completely different defect from the others. Two of them made the phone unusable and the third would probably have eventually made the the phone unusable.
But even with this unlucky experience I still love my 928. I chatted with Nokia support and more or less came away feeling able to dismiss these defects as issues with getting enough product manufactured in time for the first batch to meet the availability date. If future batches show nothing but clean start buttons then that likely validates this supposition.
I'm not sure what I would rate this device but I don't think basing it on the defective devices is called for as those reflect more on the corporation's quality assurance/manufacturing. For me, it did reflect quite nicely on Verizon's customer service in their helpfulness and willingness to do what they could and assuring me that I shouldn't have to bother with a less than perfect device and should definitely replace it whereas Nokia requested that I send them my phone and wait up to 2 weeks for them to evaluate and either repair or replace. Though I do understand why Nokia's process is the way it is, it's not consumer friendly and I think Verizon's quick replacements better serves the consumer as they can then communicate with Nokia directly and get the issues evaluated without affecting the customer.