I be hesitant to purchase the Garmin 205 as it look bulky . I prefer the 405 , however , be hesitant to spend that amount of money when the review be not absolutely rave about it . anyway , I receive the 205 and start use it the follow day . I absolutely love it ! I do not notice the bulkiness when I be run and it be easy to move between screen . I be primarily use it for interval work and it be great . I want to customize some of the workout and have not quite get that figure out yet , but I think I just need to re-read the instruction . Money well spend and I would definitely buy it again . I be no longer think about the 405 as I be very happy with the 205 .