I wanted to see if there was an option to getting (and breaking) a third as I felt that the Ant Stick was a flawed device. It probably is OK for a desktop but for a laptop, it sticks out too much on a laptop. I do not have a desktop computer (that I can use) at home. After some searching I found DC Rainmaker's review of the Suunto Movestick Mini. You can find the review here.
The price for the Suunto and the Garmin were about the same so I ordered a Suunto via Amazon. I plugged it in and so far so good. I've only had it a short time and only used it with the 910xt but hope springs eternal.
Consider this a public service announcement. If you are plagued like me with this issue you may want to consider this option. I have received no compensation nor product nor anything for this write up (I don't consider it a review as I couldn't rival Ray's).