Great service is the main thing. They even sent me a tiny e clip for free, to JAPAN! I think the postage was more than the clip.
The folks at Rotorgeeks were incredibly helpful with my very first multirotor build. They called me back when I asked to make sure there were no compatibility issues, and the quality of the in-house ...
Amazing customer service even help out on closed day when in the shop amazing, they just want you flying.
I ordered the wrong item and requested a change. They emailed me promptly with detailed instructions and voila! Bobs your uncle ;3)
People like Dave/Rotor Geeks are a blessing to this hobby. He really has a passion for it & is always a pleasure to deal with.