Neither of them. Sicilian requires too much study and French is dull opening where black suffers to the end.
Best choices would be Caro-Kann or Petroff defence.
Funny, your reasons for not going with the French or Sicilian are the exact two reasons why I wouldn't recommend the Caro-Kann. Petroff is decent, though.
Go with the French. It'll require some knowledge of theory and resulting positions, but it's an opening that you can depend on for a long time, and there are less-theoretical options out there than the Poisoned Pawn Winawer. Neil McDonald has a decent introductory book to the French, How To Play Against e4, although you'll want to graduate to more advanced options later on.
I only have the time to study one response to 1.e4 - would you suggest the French or the Sicilian.
Before you trot out your answer based on your preference - remember it is me that must play the opening not you. I am looking for something that comploments my style.
Currently I play:
1.d4 ???? 2.Bg5 as white (The Trompowsky and the Pseudo Trompowsky)
As Black against 1d4 I try to play a Semi - Tarrasch
I was fairly convinced that the Schevengen Silician was my finial choice for 2015, but personally I never minded playing against the Silician as white when I played 1.e4 and always hated to play against the French.
Suggestions of which you think would fit better with my other openings and why would be great. And 1 or two top study guides or books to get started would be nice.