I have an FT-857 and an IC-7000. Personally, even though the IC-7000 is technically better, I like the interface of the 857/897 better. I guess I just get Yaesu menus and controls intuitively.
The IC-7000 is what I use at home mostly, the Icom DSP is more flexible at dealing with urban interference, and sometimes drag it out for events like Field Day with a lot of stations. In a place that is RF quieter with fewer adjacent stations, the 857/897 with decent filters (consider a 500Hz CW and 2KHz SSB) work very well indeed, maybe better being very mature primarily analog designs (they have some AF DSP processing that is unnecessary in a backcountry, non-mobile situation).
FWIW, the 857/897 in my experience are slightly better VHF/UHF rigs. None are as good at being FM mobiles as FM mobiles, tho.
I had the 857 mounted mobile and found I just don't do much operation actual mobile (I have an ATAS-120 for it that now goes on a 10' pole). It's just too distracting trying to drive and operate and trying to work stationary/portable with it mounted in the truck is inconvenient. Who wants to sit in their truck in camp working the radio? Not this guy. Along with the screwdriver I'll also sometimes use a Ventenna HFp or doublet with a tuner. I also do backpack radio, so I like to tinker with portable antennas. I have sections of PVC and tripods I use for vehicle portable masts.
My advice is to look at the mobile HF rigs from the perspective of carrying them to work portable. Operating truly mobile takes dedication and I get plenty of my fix ragchewing on the repeaters.