My old realiable 2610 is no longer supported and I can't up date maps and tey are getting a little long in the tooth, so I am reluctantly looking for an alternative. I've tried doing some reading on newer models, but struggling, as priorities of others appear slightly different from mine. I really don't ask much from my GPS. Sure I'd like some of the bling, XM, lanes, 3D, but really the thing I love most about my 2610 is it's ability to screen routes, that is to say, avoid interstates, major road, secondary roads, etc, leaving me with often really cool routes through places I would have never found on my own. Can any of the motorcycle friendly (waterproof mainly) "modern" units do this?