If the cross band on tmv71a works as wirenut describes, you couldn't use it for cross band on repeaters here. People would kill you. And it would add to congestion during a public service event. I don't care if it's technically required, it's wrong. I'm not slamming Kenwood here, they make some great stuff and I love my TS-50.
If you're avoiding the 8800 because you know you won't like the looks of not having button backlight, or if you're an experienced ham and know you would miss it, then I truly respect your opinion. Especially the former...you have a nice truck I'm sure, and should have something you like the looks of. But if you're basing not having backlight on operation of the radio, then I'd ask if you're sure...because the buttons aren't much use, IMHO, except for going into the menus to set things, which you won't be doing while driving. I drive a lot at night, too...in NY it's dark and winter half the year. When operating 2m/440, you use the knobs for volume/squelch/tuning, and they're not lit on most radios. The buttons I use are for memory/vfo, up/down memory or frequency on the mike, high/m/low power, reverse, and maybe Mhz tuning. All of those you can do from the mike buttons on an 8800, and the mike buttons have backlight you can turn on. Things like tone frequency, tone on/off, and offset are buried under menu items on these radios, and offset is automatic. You do need the front panel buttons to program memories, and you may do that while driving, but I don't think most people do, because you still have to go into the menus to change the tones, and at least around here most repeaters have tones.
Not trying to talk you into a radio you don't want at all...just pointing out that if you're new to ham the button thing may not be a big deal.
Oh, and if you want to use this as a scanner in addition to or maybe even instead of a radio, then my comments might be way off. I never use my mobile as a scanner. It would drive me nuts, and bore me to tears at the same time, if that's even possible...