Thanks all for your answers !
I knew those Revell - Monogram kits were popular, but not THAT much !
I must tell you that I've never completed a 1/48 scale aircraft yet (tried to build the TBF Avenger, also from Revell - Monogram, but had lots of problems fitting the wings that I put the kit away for now ... )
I've narrowed my choices a bit, and here they are :
Mosquito Mk IV RCAF
Pro : one of my top fav fighter of WWII ! Con : a bit on the pricey side of the cheap scale
Hawker Typhoon Mk IB
Pro : cool looking fighter Cons : I read online people telling about some fit issues (is it true ?)
P-39 Airacobra
Pro : cool looking, easy paint scheme Cons : I already have the Academy kit of this plane in 1/72 scale
Bf-109 G-10
Pro : I read online about it's ease of assembly Cons : complicated paint scheme
I have till next Friday to decide ...