WELL the first bad road i took it on, i stuck it. sugar snow over ice. sitting on the ice i had one wheel turning (right rear) transfere in 4 low and hubs locked. handiman jack and chains on the rear and i was free.  now that i know i need better differentials, please tell me what to buy. dependable, i'm running 235/75/15 and do not plan on anything larger, should i trade out gears at the same time, what should i buy?

You could just get a lock rite for the rear, possibly the front it you were up for it.
Im not sure what tire you are running, but air that baby down, seems to do pretty good in the snow.

Amilla

i'm running a new set of winter ice tires at 26psi. i need better front pull for sure. is the lock rite the best choice for front and rear.

ARB is the all time best way to go...if you willing to drop a couple grand.
If not the Lockrite and Ez lockers are pretty much the only other ones around.  There are full spools and mini spools available, i would only run that on a trail rig. 
There is also a limited slip that you can get from calmini...If i were going to spend $450 on a locker i would just go the whole 9 yards and go ARB.

Hope that helps out.

Amilla

lockrite is $199 part# LR1510 think i'll get one. today i jacked the front wheels off ground locked the axles in put it in 4 low and spun the wheels, they spun opposite each other, but the drive shaft did not turn

A locker will fix that little problem up real nice!

Good luck

Amilla