Only Supra. When other agent use e-key, I know how many showing, when and who. We use  combo locks only for inspectors. 

I like SUPRA - at least safer as it can be opened with only electronic key.

We have supra boxes.  All I need is my phone to access it. I love it.

I use both - electronic and numeric. No scroll type, though.

Supra lockbox.  I don't like combo boxes because I have gone on scheduled appointments with my clients to see homes and found unattended "buyers" at the home.  When questioned, they said their agent told them the combo and told them it was ok to go on over without them.  It's happened more than one time.

I like the simplicity of the scroll lockbox, but Supra Boxes are a lot more secure.

I prefer the push-button types.   Here in Minnesota in the very coldest days, they seem to work better and more consistently.

I use supra exclusively, I like to have a record of who has entered the property.

I was never able to open a scroll wheel one from a first time. left-right-left.....did not go well for me:) Fortunately, most of agents use Supra these days:) I use only Supra lock boxes too.

Electronic and our MLS requires them unless seller strictly insists it not be there.

New Supra Blue tooth I box, and I love them as long as we get a signal for our phone app.

Our Board uses Sentrilock electronic boxes and if we don't  use them and use a combo box it will void our E&O. I do like the scrolling kind on my personal rentals.

I like the computerized ones offered by our association of Realtors. The inexpensive ones offered at the hardware stores are not nearly as safe as the ones that require an agent card.

We use supra

Numeric lock is easy for other agents to open - not safe and secure.

I prefer electronic lockboxes.

I use Sentrilok, supra, and scroll combos. Sometimes sellers request combos for a varity of reason.

Neither-- I use a Supra iBox.