I have over 1/2 acre of land with well over 50 trees. I have a gigantic sycamore and 4 ash trees around the house and they dump tons and tons of leaves.
For the past 8 years of home onwership I've made due with rake, broom and lawnmower. I took the "plunge" and bought a combo leaf blower/vac.
AWESOME is the only word I can use to describe it. I'd say it's cut my labor by 75% easily.
Highly reccomended if you don't already have one.