I'm satisfied with the Sony AGR2 Attachment Grip for security. Stick with the Sony NP-BX1 Lithium-Ion Battery for reliability; avoiding swelling issue...
To add to the point above: that first reply is spot on. In my experience, people get really frustrated when they realize they cant play the new stuff ...
basically, balance is everything for travel. over the years i've realized if a kit's too bulky, you wont actually carry it. since the a6700 has IBIS, ...