for max attenuation get a big old T8. for shortest length get a T4.
i've had jetz compact, jet z cqb, pes 12 - nothing comes close to the reflex ones in my opinion. i was very disappointed in all the others.
if they rot, get another - i've seen lots taht rot at the welds, this is a fault and jacksons will replace. if they dont rot straight away, and you air them after use they generally last a long time. dont spray them with oil as this causes an emulsion to form which holds moisture, and causes rot.