What is your budget?
There's all kinds of options, but it really comes down to how much you are willing to spend.
I know you posted this in the "budget and entry level transceivers", but some dollar numbers will help.
Back when I was active on GMRS, I used Icom F-4 portables, Icom F-420, Icom F-2020 and Icom F-221's as mobiles For base use, I used an Icom F-420s with a 12v power supply.
Those are older radios now, but you can pick them up rather inexpensively on e-Bay.
Older Kenwood's are a good option, and some Motorola's are suitable, but you have to know what you are buying. Not just any UHF radio will do what you need.
For "big distance" you need to pay close attention to antennas. You can spend $8000 on the latest Motorola multi band hand held radio, but if you have crap for an antenna it's not going to work any better than the $12 Wal*Mart FRS radio.
For base use, it's not only antenna, but antenna height and coax cable.
As for repeaters, make sure you have access to one before spending a bunch of money. Repeaters on GMRS are considered private property and you need to have permission from the owner before using them. Many GMRS repeaters are "open", but it's always a good idea to check, first.
Another thing to consider:
GMRS is great for many uses, however it has the nasty habit of being a "gateway" to other radio services. After a while you'll realize how useful it is having good radios. You'll realize how nice it is having access to wide area repeaters. Then you want more. And more. And more....
A lot of people start off in GMRS and then branch off into amateur radio. A number of GMRS capable commercial radios will cover into the 70cm amateur radio band pretty well. This can be handy as you progress and maybe get an amateur license. Doesn't hurt to keep that in mind as you are starting.
Good luck, and welcome to the club.