The Heil arm is slightly longer, however it mounts flush with the desk, so if you’re trying to clear a monitor, you’re just as likely to clear it with the Rode. The Heil also is 5/8″ threaded – so you don’t need to use an adaptor, which means less chance for jiggling. (My Rode Arm DID include the 5/8 to 3/8 adapter so that is good!)
https://www.amazon.com/PSA-Swivel-Mount-Studio-Microphone/dp/B001D7UYBO