Yeah the Midlands or Motorolas seem the best bet, either that or go for the B-Tech. Reading a lot of regulations and things on Part 90, 95, and 97 devices, I learned that all FRS radios are only 0.5W and must have the fixed antenna. GMRS the antenna can be swapped and most handhelds are up to 2W I think, but usually have a fixed antenna due to the fact their typically sold as walkie-talkies, and frequencies are pre-programmed and cannot be changed. That just leaves radios like the BTech or Baofengs to modify and tweak, which is not in compliance with the FCC ofcourse. And lastly, I'm assuming a radio like the ICOM ID-31A could be used, but while it does cover the FRS/GMRS frequencies, you would be breaking the rules and over-powering the frequencies using a higher power radio intended for Amateur/HAM when transmitting.
Per the 2017 updates a GMRS handheld can be 0.5W or 5W depending upon which channels you are using and GMRS HTs must have a fixed antenna. FRS radios also must have fixed antennas and will be limited to either 0.5W or 2W depending on channel.
§95.567 FRS transmit power.
Each FRS transmitter type must be designed such that the effective radiated power (ERP) on channels 8 through 14 does not exceed 0.5 Watts and the ERP on channels 1 through 7 and 15 through 22 does not exceed 2.0 Watts.
§95.1767 GMRS transmitting power limits.
This section contains transmitting power limits for GMRS stations. The maximum transmitting power depends on which channels are being used and the type of station.
(a) 462/467 MHz main channels. The limits in this paragraph apply to stations transmitting on any of the 462 MHz main channels or any of the 467 MHz main channels. Each GMRS transmitter type must be capable of operating within the allowable power range. GMRS licensees are responsible for ensuring that their GMRS stations operate in compliance with these limits.
(1) The transmitter output power of mobile, repeater and base stations must not exceed 50 Watts.
(2) The transmitter output power of fixed stations must not exceed 15 Watts.
(b) 462 MHz interstitial channels. The effective radiated power (ERP) of mobile, hand-held portable and base stations transmitting on the 462 MHz interstitial channels must not exceed 5 Watts.
(c) 467 MHz interstitial channels. The effective radiated power (ERP) of hand-held portable units transmitting on the 467 MHz interstitial channels must not exceed 0.5 Watt. Each GMRS transmitter type capable of transmitting on these channels must be designed such that the ERP does not exceed 0.5 Watt.
§95.1787 GMRS additional requirements.
Each hand-held portable unit transmitter type submitted for certification under this subpart is subject to the rules in this section.
(a) Digital data transmissions. GMRS hand-held portable units that have the capability to transmit digital data must be designed to meet the following requirements.
(1) Digital data transmissions must only be initiated by a manual action by the operator, except that GMRS units may automatically respond with location data upon receiving an interrogation request from another GMRS or FRS unit.
(2) Digital data transmissions must not exceed one second in duration.
(3) Digital data transmissions must not be sent more frequently than one digital data transmission within a thirty-second period, except that a GMRS unit may automatically respond to more than one interrogation request received within a thirty-second period.
(4) The antenna must be a non-removable integral part of the GMRS unit.
(5) GMRS units must not be capable of transmitting digital data on the 467 MHz main channels.
(b) [Reserved]