I use the flatliner 5 pin and it is great had a small bracket made so I can put in a LED and it lights them ight up.
Also I have just fitted a hindsight to the bow the combination is great just dont aim at the same spot on the target I found out the hard way and now have a very long carbon with 2 sets of fletching. Now I use playing cards on the target I shoot 6 arrows and have 6 cards on the block one for each arrow