What is best top battery post to use

NAPA has a bronze battery cable repair terminal that uses a compression nut to securely clamp the cable inside the battery post clamp - it cost a bit more but is well worth it!

see pushrods answer for best advice verses spending over $100.00 for new cables for both pos and neg cables with connectors attached. 21 years old,time,loosening and tightening/over tightening is what causes this. most don't realize all you want is to snug them,not torque em.I had a problem on my F150 from previous owner 12 years ago on the neg terminal,but wasn't broken,just not snug,so I loosened it all the way up,turned it over(upside down),gently tap it onto post,snug it up because the top of that terminal is smaller than the bottom of it,works like a charm,no problem with positive terminal so far.my sons 91 civic terminals collapsed on his battery post(all the way tight,but loose) ,but not broke so he made him a piece at work to put inside the terminal,works like a new one!