cant go wrong buying this one. it takes hard work to earn your degree, but you can get through college with less stress if you stay organized, keep a schedule and remember to make time for family and the activities you enjoy. the right thing to always do is to make sure that the right repair work is being done. i also have students weigh their bridges and compare results. that option always belongs to the individual. they are wonderful with the family they live with and also pets. the reports are something else to rave about. 