thanks for the replies. i just got a "new" car, and will be doing a fair amount of commuting; i know the roof systems create a bit of drag. i will probably go with a thule roof system, but wanted to "do diligence" by researching the trunk systems. read some reviews about the trunk mounts, and one of the more common issues is small dents and paint scratches to trunk and bumper.
it just kills me to have to go walking today instead of biking because i have no means of getting my bike to the trails, and do not want to ride the roads...