Draw runner recommendation required.

[Monkey Mark]

I'm thinking of renewing our kitchen. It's well beyond its best by date but it will likely only happen if I do it myself to keep costs down.

As this will be a first for me, I'm looking for recommendations on draw runners please. SWMBO would prefer soft close and she also liked the idea push-to-open drawers to do away with handles for a modern look.

With the push to open ones, how much of a gap does there need to be for the operation to work?
Any recommendations, suggestions or tips greatly appreciated as this would be a first for me.

 

[HOJ]

I am going to order some push to open, Motion runners, for a cupboard I am building from Ironmongery Direct (presume I can name names)

They have drawings, link below:

http://docs.ironcdn.co/drawings/771691.pdf