Yea, gotta go for lasso. It's size-changing means it can be used to hold individuals, groups, or help tow the moon. It can be used as a slicing weapon or whip. It can stop spells and break illusions, and incapacitate even powerful foes. It's almost impossible to break, strength won't do the job, and it's been used to take down gods.
the hellfire chain can stiffen as a staff, is unbreakable, links can break apart and be used and throwing stars, it can lenghthen to unknown limits, he can be used as a saw, gr spins it at tremendous speeds and it can cut threw virtually any material and it responds to gr via his mind and his mind only but yeah, lasso very slighlty
I rather have the hellfire chain as part of my personal arsenal but the lasso of truth has the slight advantage in terms of 'which is better/more powerful/multiple-functional'