Dye hinge- This one is completly preference, as the angle of the trigger is something you will either love or hate. Not very adjustable, and not as smooth as other options.
Eclipse hinge- Very adjustable, a great frame. The stock springs are snappy, so you may want to switch them out if you like a smooth trigger.
Kapp hinge- VERY VERY VERY adjustable. Much shorter profile than that of the wgp hinge. however it is anywhere from 30-40 dollars more expensive than the wgp, which could buy you a smooth 4 way like the besales. However if you are willing to fork out the bucks, this is an excellent choice.
OLD shocktech hinge- Run away, run far far away. Ugly as halb's kitty, and not very smooth. There is a reason these are no longer made.
Owner of "The Gato-Cocker"its a 2002 Verty Green Cocker with a PMI 48/3000 pure energy, Blue psyco ballistics drop, Lightning bolt with evo pin, sidewinder shorty chrome reg, Freeflow valve, Freeflow Tungsten hammer, Freeflow springs, chrome micro rock (all Freeflow internals+micro rock= NO CHOPS!) and a Powerlyte Scepter SS back 12 incher
Smooth, adjustable, not too stiff or light, cheaper than others, customizeable.
Taller than other hinges, not as adjustable as some others, not everyone likes hinges.
This is a very good investment. Right away most people will notice a large boost in rof. The trigger is not so snappy that it is hard to pull, yet not too light to not be "reactive". It is probably the most customizeable trigger frame for the autococker with the cam adjuster, 3 triggers to choose from, and p&p's slew of colors. I saw my rof jump from 6-10 bps at the crono my first time using it, without even trying hard. This is normal pulling, not fanning or anything. Higher rof is one reason to buy this. If you occasionaly short-stroke, this could be your answer. If you feel outgunned and don't want to spend 380-450 on an electronic frame, than this could be your answer too. The fact that you can get them at many places online for under 60 dollars is a steal. It personally helped my snapshooting, backplaying, and even helped me shoot straighter. No, this is not one of those things where the gnomes guide the ball into a straight path, it is because it is such a smooth trigger and natural pull, I jerked the marker less while shooting, allowing me to hold the marker steadier. However this hinge is slightly taller than other hinges, and less adjustable than others (eclipse, kapp). This did not affect the game i played when using the hinge at all. Overall, I had a great time using this fine product.
If you have been using a slider for a while like myself, you might want to go to the field and ask to shoot one. While it has some shortcomings, they are not enough to hurt the fact that this is a great upgrade. The fact that it is the cheapest hinge makes it one shmelt of a deal!