inputs.text: buy navibe gm720 rather ran globalsat bu353 - purchased two globalsat bu353s last couple years loved using thehem microsofts us streets trips 2009 currently autoroute frencheuropean version frustrated difficult acquisition units satellite reception often open window hold bu353s outside car roof even often takes several minutes even longer get signal normal unencumbered roads countryside therefore purchased navibe gm720 lark see works better acquisition satellite signals unmeasurably superior even unplugged one plugged comparative tests navibe gm720 acquires signal almost instantly globalsat bu353 takes long time sometimes program cycles acquisition would interested knowing different circuitry cheap garmins seehem acquire retain signal almost condition not usb models work well one drawback gm720 bottom smooth thus slides dashboard car turns quickly accelerates globalsat model rough sort rubbery bottom surface tends prevent sliding around