No ideas for alternatives… I was a peek “early adopter” and am still following their company news blog, they’ve been shipping new peeks out as quickly as they can to all the people with older ones. I stopped using them a long time ago for this same reason, it was just too unpredictable of when it was going to be reliable.
If you search for “peek blog” you can find their blog, I don’t think it’s linked to from their main site. They’re based in NYC and are very nice, if you’re local, stop in and they should replace it on the spot.