Russell Electronics manufacture the Scotty BB. Not sure who makes the Cabela's model. Both have the same working principles.

Differences- other the shape, the connection sleeves. Scotty's are a flaired tube and Cabela's are coiled just like a spring.
Scotty's offer a pulse mode which I have had success with. Not sure about the Cabela..

Both units are water resistant- not water proof. With that, one advantage the Scotty model has is that it can be mounted in dash. Not on top like the Cabela's model. Just a little more protection from the elements IMO.

SPORTCO has the Scotty for $249.00. Pretty darn reasonable compared to ......

Downriggin'
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"If you are not scratchin bottom, you ain't fishing deep enough!" -DR

Puget Sound Anglers, Gig Harbor Chapter