What are some of the better quality mobile & portable brands of GMRS/FRS & MURS radios made to date? I'm tired of the cheap bubble pack portables even being sold in local convenience stores.
You might already know this, but you won't find any legal FRS capable "mobile". The exception was (many years ago) Radio Shack (I think) made a radio that had the RF section in the antenna base and a remote "speaker/mic" that ran inside the vehicle. Worked pretty well, from my understanding.
You also will not find a legal MURS + GMRS/FRS radio. FCC rules for MURS specifically deny any combination of MURS with any other radio service.
For MURS mobile, you'd be kind of limited. There were some old Motorola GM-300 mobiles that were 2 watt only that I -think- fit the requirements.
For GMRS, many of the 1990's era Icom and Kenwood mobiles had Part 95 acceptance, there are probably other brands but those are the only ones I know of for sure.
I used to use Icom F-420, Icom F-420S and Icom F-2020 mobiles when I was active on GMRS. All had Part 95 certification and were perfectly legal.
Keep in mind that the 7 interstitial GMRS channels are shared with FRS channel 1-7. With a valid GMRS license you can legally talk with 5 watts of power to FRS radios, but only on those 7 channels.
For portables, I used the Icom F-4. You can find them really cheap used. Just make sure you are getting the right UHF bandsplit. They are NOT interchangeable.