Having used the Suunto 9 for a number of months to race and train long distance, I find the Suunto 5 a great watch for everyday training and wear. It's great that it is waterproof and fairly sturdy, so I can take it ocean swimming and trail running without any worry. I also love the sleep monitor feature to help me achieve my target of 7-9 hours each night. I like the new improved strap from the Spartan Trainer, it fits around smaller wrists better. Only thing would be that it doesn't maintain lap splits for easy viewing on the watch if doing track reps or intervals. Other than that, a great all round watch!