When I first got my truck it had a posi rear in it. It was great for doing burnouts and showing off, but not very "streetable" whe it came to everyday driving. The slightest moisture on the roads and it was a beast to keep going straight.
And absolutely no going in the snow.
But, the pinion was shot and soon that rearend was history...so I switched to a standard "one legger" out of an old impala rear I had lying around.
No more dual blackmarks off the line, but great in the rain and snow.
I wouldn't mind having limited slip, but what I have works nicely.
And I don't have to replace the rear tires as often