For anyone else reading this thread, suggest the $14 at Walmart Cruzer Glide 16GB USB 2.0 flash stick.
I tried creating a recovery backup on a Transcend USB 3.0 16GB drive several times and could never get it to boot. The Cruzer Glide stick booted booted reliably and restored system with upgraded SSD perfectly. (I also did a recovery backup to 5 DVDs which booted ok, but I didn't test restoring from them.)