There are several designs for the same function. So take note of what suits your setup.
This is the best one, for me at least.
These vary by direction of the cables inserts, locking switch, gauge size, selection indicator, product size.
I also bought this version (which I sent back) I'll be referring this as "the other" as we compare the two.
Reasons for the one I kept:
The major detail. This one takes cables from the back and points it to the side. The other one takes cables from the side and points to the other side.
Same design on both, one button squeeze. Probably better than the two button squeeze seen in another design
Cable Gauge size: This one is a bit bigger perhaps will let more light through the switch, hence better chance for longer cables. Not tested, just theory.
Selection indicator: This one is brighter using florescent label instead of red in the other. Minor detail.
Product size: This is one bigger by 1cm in longest diameter than the other one.