The short answer:
They state it's made for trucks and RV's because of the screen size, in that in a larger vehicle like that you are more likely to mount it farther away from you, so you'd need the larger screen to see it better. Also, because of the more remote mounting, they come with remote controls.
The long-winded answer:
The routing preferences, like routing specifically for a truck, car, emergency vehicle, bus, taxi, whatever, those are map-version software specific. Meaning, if you are running Version 8 of the City Navigator software, you'll have the same routing options on the 7200 as you would the c550 or any other Garmin unit that can use City Navigator software.
Going from the large laptop screen to the c550 I thought the small screen was going to be a big problem. It wasn't.
Other than the screen size, the difference between the 7200/7500 and the smaller units like the c550 is the bells and whistles. The larger units allow more stopping points during the trip, where the c550 affords for one stop along the way. I thought that was gonna be a problem, too, but it wasn't.
The larger units do have a video input for a remote video camera, which may come in handy for some. And they are also XM Radio receivers. I already have a receiver, so that wasn't an issue.
If you mount the unit within reach, the larger screen and the remote becomes a non-issue for most.
Biggest issue for me and the 7200/7500 is that it's just a taaaad bit behind, technologically speaking. They don't have the new SIRF chip that grabs and holds onto the satellite signal better. (The 7500 does have "dead reckoning" whereby it will use the speed and general direction of the vehicle to calculate your position when it loses the signal, provided that it is installed by a qualified installer. But that's truly not needed with the SIRF chip, even in the canyons of Manhattan. The only time you'll need it is for the brief moments in long tunnels and occasionally when in the mountains.)
The difference between having the SIRF chip and not having it isn't that big a deal usually, but without it the signal can be lost pretty often in the mountains, around buildings, and even under trees. Without it, it has the same satellite connectivity reliability as a satellite radio antenna, so if you are familiar with those you'll know that it's not that big a deal most of the time. But with the chip, well, other than in tunnels, like it almost never loses a signal.
Like, on the PA Turnpike, those two tunnels, the signal will be lost about half way through, then will regain the signal immediately after emerging from the other end. Same tunnel, the 7200/7500 would lose the signal almost immediately upon entering the tunnel. The 7500, however, would use dead reckoning to continue to show your position.
So, if you would mount it where you can't reach it, the larger screen and remote control trumps the lack of SIRF chip, IMHO.
