Topcon VR vs Carlson BRX7

I'm looking for you guys' experience with these 2 GPS units. We currently have a Topcon VR on rent-to-own that we are considering purchasing. We have also considered purchasing a new Carlson BRX7 unit instead of the Topcon. The reason we have considered the Carlson over the Topcon is because it seems there claims of how well it performs in canopy are true based on a couple of local surveyors that have the BRX7 and getting signal in canopy is a game changer for sure. I know a surveyor that claims he hasn't used a total station in 2 years since having the Carlson unit. I know another surveyor that has 2 of the Carlson units and says that they perform well in any terrain at any time of year. Our Topcon sales rep claims that the new 5.5 firmware upgrade for the Topcon VR allows it to go head-to-head with the Carlson BRX7. What has your experience been? Has anyone seen both units first hand and if the Topcon performs just as well with the most up to date firmware? Thank you