PR - Question: have you tried to take your SB into a MS Store to get it replaced? I'm hearing those efforts were quite successful over the year plus I've been monitoring these forums. Especially when done during its one year HW period, and especially if you have purchased extra protection through MS.
Also: Gary is a good guy. He has been very helpful over the past year and has offered a glimmer of hope to us who have had the worst of it. He has had his share of issues, too, though, which he has worked through. So give the guy some credit.
As for me, I sold my SB after 6 frustrating months (I was also an early adopter.) I purchased a fanless Core M base model SP4 and it has given me very few issues at all. I'm a happy camper! When SB2 comes out, needless to say, I won't be first in line again. I would consider upgrading to an SP5, however. MS has had years to iron our problems with that device.
Take care,
BB