thats a tough choice for sure, not to much difin anyof them . 700x is top id say and in most loads the green dot patterns very well usually if u pattern any the green dot will give u denser patterns in a t rap load
now adays , u factor in one other thing , cost if u can get a deal on one of them then take it , buit always use a set of scales to set up yur relaoder ,,,, bushing sizes or numbers mean nothing really , just a number to start from , iam wondering how , 700x and all IMR dupont powders will change since they were bought out , Hodgon bought out IMR /dupont powders ???wait an see