Limited slip axle - must have?

[cbgenrich]

It's not the cost ($300), but the constraint. The choices are these:

1) 3.15 Non-limited slip axle ratio
2) 3.55 Non-limited slip axle ratio
3) 3.55 Limited slip axle ratio
4) 3.73 Limited slip axle ratio

I know that higher ratios tow more weight, and lower ratios get better fuel economy and are somewhat quieter to drive in non-towing situations (lower RPMS).

Seems like 3.55 is the way to go, rated for 9700 lbs, in case I want to pull some bigger Airstream some day, without being overkill. It's also the most common and available.

Is there a down side to having limited slip?

If I buy a new truck with non-limited slip, will I regret it? Is limited slip a must have?

-CB-