you will probably like the extra features of the 7r over the ft60. both will put out 5w.
I used an HT in the vehicle for trail runs and I didn't like it at all. Unless you add and external speaker and external antenna to make it easier. Still, you're only on 5w. One of the beauty's of hams is putting out 50+ watts to really reach out. Trying to see how far you can get 5w out can sometimes be fun but HT's are limiting. I would buy a nice mobile radio first if you are wheelin then an HT or buy a mid mobile and mid ht.
See you on the trail
Couple o' FJ40's, BJ70, PZJ77, UZJ100, TDI