I've recently gone back to BF3 for similar reasons and I gotta say I'm glad I did, Aftermath is awesome. I don't have any one weapon that I use, I switch up alot.
G3A3: holo/kobra, rail, and hbar
F2000: flash suppressor and holo
M16A4: hbar, holo, and rail
AUGA3: hbar, holo, and rail
AN-94: hbar, holo, and rail
FAMAS: suppressor, kobra, and grip
Scar-L: hbar/flash suppressor, rail/grip, holo/kobra
AEK-971: flash suppressor, iron sights, and rail
M416: hbar, holo, and rail
M4A1: rds and laser sight
Scar-H: kobra and hbar
MTar: holo/kobra, grip, and hbar
ACW-R: holo/kobra, grip, and suppressor/hba,
SG553: holo/kobra and hbar
UMP 45: holo, flash suppressor, and laser sight
M5K: kobra and laser sight
Spas-12: flachette and holo.
M39 EMR: holo and bipod
I like rifles... Alot.
[Edited on 01.04.2013 12:42 PM PST]