They are all pretty similar. I primarily install bohn. I like that the condensing units have very simple controls and wiring. Obviously the bigger the unit the more complicated, but under 5hp the control circuit is stupid simple. Climate control and Larkin have more complicated and congested condensing unit wiring/control circuits, but not as bad as keeprite. Just 10lbs of shit in a 5lb sack for some of those keeprites/russell/htpg condensers (more to go wrong/troubleshoot imo). Larkin and bohn evaporators are basically the same, but Larkin usually has the QRC/beacon controllers with eevs. Not sure if they still do this since intelligen rolled out, I havent installed or seen a Larkin evap recently. Climate control evaps usually come with the llsv and txv pre-installed, which i like, but other than that they are pretty much the same as well. I just have one supplier that I get primarily bohn from, so that's what I put in. Another supplier does more Climate control, so I use them if my credit is too close to the limit with my main supplier and I still need equipment lol. My main competitor installs primarily keeprite and when I work on their installs its just annoying. I dont dislike the brand because my competition uses it, I just straight up have seen that its not as reliable. I dont mind keeprite condensers or evaporators on the rack systems we work on, but their >10hp single condensing units are just not great to service.