Locker or limited slip?

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Any one have good advice for deciding on one or the other?

I have a 1993 K2500 6 lug with a 9.5" in the rear, thought I lost a pinion seal when it turns out that I've lost a lot more than that warranting a rebuild. It's an open diff currently so I'm going to upgrade while I'm in there. I mainly use it for winter (which was gnarly this last year), towing, and hauling stuff around with the occasional off road hooning. Seems as though a limited slip would be my best bet but I know those aren't perfect and often still leave you one legging it (or are the newer ones better?), conversely lockers are more solid but can be too "locked". I know there's other options such as True Tracs and such but don't know anything about them.

Additionally, it has a 6.0 LQ4 and 4L80E with the stock 4.10s so it really needs something to get both spinning. Also it has 265/70R17 with no plans of going any bigger tire wise.

Thanks