Flown both, in the circumstances you describe, and I prefer the 320.
Noise levels lower, more comfortable, less fatiguing.
More capable peformance and simple operating procedures reduce further headaches, and the 320 itself is a pleasure to fly, with excellent situational awareness and progressive cockpit SOPs.
'Easier', though is quite a subjective thing: not counting the difficulty (or otherwise) of the type rating itself, the 'easiest' aeroplane to fly is usually the one you are most familiar with; that familiarity could be hours on type, flying recency, or both.
Last edited by Gary Lager; 28th December 2006 at 17:55.