Here is what I just posted in a thread about the GMRS-Pro. I may try the 935 as avoiding channel groups would be my preference. I also did not enjoy my “customer service” experience with BTECH via email. Here’s my post: I own two BTECH Ppro handhelds and a half dozen UV-9G handhelds. Lots of Nagoya antennas as I like a 701 & 771 option for each radio. I find programming via Chirp simple on the UV-9G but that isn’t an option on the Pro. The app used for the Pro is fine for using one of the six available channel groups/banks, but I’ve had a lot of frustration getting the other banks programmed. As for BTECH’s “USA based” customer service…. it really sucks. Just this week I reached out via email - the only option for contacting them - and we went back and forth, with lots of runaround and no solution. They actually wanted me to film myself programming so they could see what I’m doing. FFS I asked for a simple call, which likely could have resolved the issue quickly, but they refused to assist in a way that was convenient for me, the customer. I have a Midland mobile 50w unit too and Was seriously considering Baofeng/BTECH mobiles for my other vehicles. Because of the ability to program multiple channel groups. Now, after being several hundred deep in BTECH/Baofeng, I’m ready to sell all of their stuff and stick with Midland, as they actually have a phone number and people willing to help. The products may be fine, the support is terrible.