
I couldn't decide between the TT350o and TT685o for my E-M10 so I bought both. I kept both. If I had to choose just one, I would choose the TT350. On the camera I only use the TT350. The TT685 is 1 stop brighter and much bigger/heavier (too much for in-camera use, IMO). The TT350o is powerful enough for indoor use 95% of the time (and if that wasn't enough, I'd rather bump the ISO by 1 than lug around a 685). I only use the TT685 outside of a TT350 controlled camera when the scene could benefit from multiple lights. Both flashes work very well together.

Soft Silicone AirPods Case Cover With Visible LED - Compatible With AirPod 2/1 Cases, Keychain Accessory Included - Ideal For Men, Women, Girls, And Boys - Light Pink
37 Review

Classic Camera Bag, Evecase Large Canvas Messenger SLR/DSLR Shoulder Case With Leather Trim, Tablet Compartment And Removable Insert For Mirrorless, Micro 4/3, Compact System, High Zoom Digital Camera
41 Review

A Durable And Protective CaseSack For Bose QuietComfort And SoundLink Headphones
41 Review

Protect Your Earbuds On-The-Go With Small And Portable EVA Case - Perfect For Airpods, USB Drives, Cables And More!
34 Review