Coil springs vs. Leaf springs
 

I am considering purchasing a 2007 Avalanche, but I have a question regardng the rear coil springs in relation to towing. I have a 6,500 pound boat that I will be trailering four times a year for a fairly short distance. I am concerned that the coil springs may not hold up over the long run (years) compared to leaf springs. Any comments regaring this or other thoughts with coil vs. leaf?