I use Rex / SF / RG / JKA / Lando and always #1 in payout and never below #8.
May shard.
Just don't get obsessed with speed secondaries on mods.
If you have a mod with 900+ flat protection and 6+ speed, it's far better than a mod with +10 speed and no flat protection.
Same with critical chance, don't get too obsessed with it. Sometimes you give up on protection for speed/crit.chance and end up not bursting quick enough.
Pay attention to the flat numbers (flat offense / flat protection) on secondaries and you will see you can rank higher solely on these stats.