it is a 60-40 question! since the wind
is predominately southwesterly,and the tidal gates are more or less the same whichever route
the tides are bigger on the french side,with more sandbanks,but the marinas
are cheaper and you have good wine and cheese.
i prefer the english
side as there are more all weather
harbours,that you can enter easily at any state of the tide.
apart from crossing the tss you can take the inshore route
on the uk side
( which is just outside the tss shipping
you also want to plan to be passing ramsgate at about hw slack dover so as to pick up the next favourable tide for the north sea,which is a few hours after the dover hw.
if you get it right you will have 2 favourable tides,almost back to back.
make sure your charts
are up to date as there have been quite a few changes to the tss recently due to all the new wind