Hi Michelle, I had an ABA sling with my first DD and used it constantly, it is however less comfortable than a HAB but much easier to get on and off quickly (getting in & out of the car when you're out and about, for eg). Yes I find my HAB hot in summer, but I'm a hottie who hates summer anyway. The other thing is, sometimes dads are a bit resistent to the HAB, so it might even be worth getting one of each, you will use both of them at different times and for different reasons...HTH