I would use a T8 but to be truthful it all comes down to budgets,look around and see what the reviews on moderatos are,some are good some are bad.
1) Moderates the report efficiently Some fare better than others, but will cut down the noise considerably,try shooting with/without to compare
2) Does not extend the length of the rifle excessively Most moderators for this calibre will extend the length of the barrel
3) Is not too heavy and therfore unblances the rifle. You will need weight at the front of your barrell, in order to prevent too much recoil,a .223 will recoil
4) Can be d