Have been using the model with the sport top - has an integrated handle in the top as well.  LOVE this "canteen" vs. a couple others I have tried.  The sport top seems rugged enough to last a good long time as well.  Keeps me drinking more water instead of other "stuff", and keeps me away from using plastic bottles or even plastic re-fillable types.  Highly recommend.  Even tho any of these bottles - from most brands as well - cost from $14 to $20, they pay for themselves in weeks if you were a bottled water drinker... assuming u bought in bulk.  If you buy by vending or fast-food water bottles, pays for itself in like 5 days... LOL!