I can't speak from experience, but I have searched the threads and read tons of information on both. I am waiting for responses from a couple of big jobs, i.e., 25 ft high or more.
Just looking at my options for these jobs, extendable wand vs. lift, both have advantages and disadvantages.
With the lift, your mobility is limited. Unless you're able to get hold of an all-terrain type. Or if it's mounted on a truck, even better, but still a minimum 1 ton truck has its limits.
Disadvantages:
1. Maybe the customer doesn't want heavy equipment rolling around on the grass, sidewalks, etc.
2. You may not be able to maneuver the lift/truck into postion due to limited space.
3. If renting, must add cost of rental to estimate.
Advantages:
1. Gets the job done more quickly with less fatigue.
2. Professional appearance.
An extendable wand
Disadvantages:
1. Heavy, cumbersome, and difficult to control.
2. Will wear your ass out!
3. More time consuming to set up.
Advantages:
1. Stay on the ground to reach the high places much safer.
2. Less time consuming getting into tight places.
3. Less expensive than a lift or truck.
Did I miss anything guys?
When the time comes to need either, I will likely opt for the wand weighing these factors, but mostly because it's cheaper.
After all this, I'll close saying this: It's all a matter of preference. If you are financially secure enough to make the purchase, I say go for it. Hope all that babbling helped.
Randy