I've just received my copy and have listened a couple of times. To my surprise, I found myself still completely unmoved by the Second Concerto, which I've known for quite a few years from the Donemus recording and always found unmemorable. To me it seems very predictable, full of empty gestures and competent but unexciting orchestration. The Fourth, on the other hand, comes across as a much more imaginative and satisfying piece with the first two movements (and especially the middle one) making an instant impression. Maybe the fact that it's six minutes shorter overall helps.