I get asked this question a lot as I'm the unofficial "radio geek" for our club. Let me start by saying that if you're looking for a radio to communicate with a group of vehicles (Broncos) on a trail run, then a handheld will likely be plenty of radio for you. An HT is a great was to get started, and later, if you decide you need something more, you can always add a mobile into your Bronco. The HT won't be a waste, since I always recommend that if you leave you Bronco while on a run, you take an HT with you. Personally, I have a few since they are pretty inexpensive, so I can have mine, my wife has hers, and I still have a couple I can lend out when I'm leading a run to someone who doesn't have a radio yet. When I'm leading a run, I prefer everyone have a radio, to me, it's a safety thing.
OK, so which handheld do I recommend? Well, "it depends". You can pick up an inexpensive Baogeng on Amazon, and any of those will work great for what I describe above. Radio's like the UV-5R, etc. are all, actually, HAM radios that will work on the GMRS frequencies. Some have to be "unlocked", some like the BF-F8HP PRO don't (my current recommendation, or at least one of them).
https://a.co/d/8b2xKff
But in both cases, they do have to be programmed, and that can be a bit of a PITA unless you're a bit of a radio geek, or know one that can help you. If you want a "pure" GMRS handheld that requires no programing, you could go with something like the BAOFENG GM-15 Pro.
https://a.co/d/gZ56pqE Note that that radio works ONLY on GMRS. You can get a pair of those for under $40 right now with the Black Friday sale on Amazon at the link I posted.
All of the radios above are repeater capable, so if you are in an area with a repeater, you can key one up with any of those radios and extend your range considerably. But repeaters are a WHOLE other conversation.
If, on the other hand, you do decide you want to go with a mobile radio, then I usually recommend the Midland MXT575
https://a.co/d/ch8lkEM which I think someone mentioned in one of the other posts. You can mount that radio in a hidden location since all of the controls and the channel display are in the microphone. Note that this too is a GMRS only radio. If you're looking for something that is a dual band radio, I'm using an ICOM 2730a with the MARS Mod (note, that MARS mod is important otherwise you won't be able to transmit on GMRS freqs).
https://www.gigaparts.com/icom-ic-2...enXigN2LSuem78lPWZbpiRzTxd-mqQ9FSbRyaild879rU This radio also requires you to program in the frequencies you want to use, and you can use a computer to do that. Again, that's a WHOLE topic, but just keep in mind that the non-GMRS only radios can all be programmed via a cable connected to your laptop and the right program (like Chirp) running on it.
If you have any more questions, feel free to reach out at any time, I'm happy to help.