I whipped up this chart to compare what features each unit has in common, and then who wins in certain categories so you can see how different these units are. In the first section "Shared Features", you can see they do have similar functionalities. In the "Cardo Wins" category, there are a few cool features that the SMH10R doesn't have. And then in the "Sena Wins" category, it has a few features that the G9X doesn't have.
SHARED FEATURES:
CARDO G9X
SENA SMH10R
4-Way Intercom Conferencing
yes
yes
A2DP Stereo
yes
yes
Answer Intercom Calls via VOX
yes
yes
Digital Signal Processing (DSP)
yes
yes
GPS Connectivity
yes
yes
Hot Dial
yes
yes
Make and Receive Mobile Calls via VOX
yes
yes
Mobile Phone Connectivity
yes
yes
MP3 Connectivity
yes
yes
Music-Sharing™(between Rider-Passenger)
yes
yes
Plug-In Speakers (3.5mm)
yes
yes (optional)
Replaceable Mics
yes
yes
Software Updates
yes
yes
Spoken Status Announcements
yes
yes
Voice Commands
yes
yes
CARDO WINS:
Web platform to change settings
yes
no
FM Radio with RDS
yes
no
Automatic Volume Adjustment (AGC)
yes
no
Click-to-Link®
yes
no
Flash Pairing®
yes
no
Group Signal
yes
no
Intercom Bike-to-Bike
Up to 1mile
Up to 0.55 mile
Intercom Toggling
between 9 bikers
between 4 bikers
Talk Time
13 hours
8 hours
Standby
7 days
7 days
SENA WINS:
Universal Intercom
no
yes
Ultralight Profile
no
yes