OK, Arsenal Man Utd and Chelsea are way ahead of the others, but the race for the 4th spot is still interesting... and it's only been the last few seasons it's been that top 4... go back a few years and there was Blackburn, Newcastle, Villa, Tottenham, West Ham... various teams at the top... this 'top 4' thing might not even last for a great deal longer, with various teams building to challenge.
La Liga has possibly better quality in the Uefa Cup spots, but beyond the top few the quality is very poor. The games between the mid-table teams are often rather dull and lacking quality.