Could you elaborate here? Why are DP switches better and what is ES?
Over my head here a little, more reading required.

DP switches switch the neutral as well as the phase. If you're going to use
a grid switch and light switch looped neutrals, the additional neutral
connections in the switch modules may actually make wiring easier, as you
aren't trying to stuff loads of neutrals in one loose and poorly insulated
connector.

The DP grid switches will have live+neutral supply and live+neutral load.
Simply connect the output lighting cables to the load terminals and connect
all the supply lives to each other (and the incoming circuit cable) and all
the supply neutrals to each other (and the incoming circuit cable). No
terminal (except your earth block) will need more than 2 cables inserted.
Each of the T&E live conductors (phase or neutral) will need to be cut the
same length (the earths will probably need to be longer), making
installation easier.

+----------+----------+-------- to circuit live
| +----------+----------+------ to circuit neutral
| | | | | |
+-L-N-+ +-L-N-+ +-L-N-+
|Supp.| |Supp.| |Supp.|
| | | | | |
|Load | |Load | |Load |
+-L-N-+ +-L-N-+ +-L-N-+
| | | | | |
| | | | | |
| | | | | |
To light To light To light
1 2 3

Earths omitted for clarity.
Switches 2 and 3 will have 2 T&E on the supply side.

ES = edison screw. Miswiring in the lighting circuit wiring may make the
outside terminal live, when it should be neutral. At least with DP
switching, when the light switch is off, you know that the accessible
outside terminal is dead. This benefit is very minor. The main reason I
suggest DP switching is that it can make wiring simpler when you have switch
looped neutrals.

Christian.