Multiple fuel bottle sizes
Heat times are fast
Pretty bullet proof
More complicated than a canister stove
Stability on softer surfaces isn't very good
Overall this is my favorite of all the backpacking stoves I have trialed. If prefer to use a stove that is refillable, the whisperlite is a solid choice.
I wouldn't trade this for anything. I also took one of these on a 4 day hike of the AT and in the pouring rain it was marvelous. Hot quick meals, cools quickly for quick turnaround meals and off again!