#2
Only major differences are looks, and the C-1 has two volume pots as opposed to the Avenger's one volume pot.

Both volume pots on the C-1 are useable, one pot is used for each pickup.
~We Rock Out With Our Cocks Out!: UG Naked Club.~
Once in a blue moon, God reaches down from his lofty perch, points at an infant boy and proclaims, "This one shall have balls carved out of fucking granite."
#4
Yup, if you don't feel you need the extra volume pot, then pretty much the only remaining factor is look.

Go for what you like!
~We Rock Out With Our Cocks Out!: UG Naked Club.~
Once in a blue moon, God reaches down from his lofty perch, points at an infant boy and proclaims, "This one shall have balls carved out of fucking granite."