hard to pick a favourite, I love almost all weapons in reloaded, every gun has it's charm.
I like XL7 for it's early accesability from crafting, universalness and easy to obtain ammo. (I love bullpup design)
Pancor for knockback and penetrate. (also bullpup)
.223 pistol and sniper rifle for how awesome they look and because aiming is cool.
LSW for it's sound and firing animation. (again bullpup)
Ripper and .44 Magnum revolver cuz they are awesome.
for some reason I don't like tommy gun much,
also I'd like mauser more if it was rare.
oh almost forgot crowbar, because half-life