My parents have a vacation house and last fall the SlingCatcher got fried from a lightning strike. Would any of the set-top boxes work well with the SlingPlayer App and be compatible with the AV? They don't have or want tablets to use with the Roku. Amazon Fire doesn't have a sling app that I can see.
Anyone use the WD live or Sony GoogleTV?
Given the chart here, I wouldn't expect any TV-connected device to work with a Slingbox AV (including the ones you asked about). If you must use the AV, you're probably in the market for a used SlingCatcher. If the Slingbox is replaced with a 350 or 500, more options are availabe (including the ones you asked about).