ultimate solo upgrade thread

I'd like to have a sticky one stop shop thread for all the upgrades people have found/recommend for the Solo. Props: GPS: Solo GPS Shield V2 - 3DR mRo GPS u-Blox Neo-M8N (Release 2) Range extenders: DSLRPros Horizon Range Extender Kit (3DR SOLO) ITELITE - 3DR Solo Range Booster ITE-DBS03.3...