I have been running the Isky's with the bushing and most people consider them the best option over needle bearing roller lifters. I did some research and found out from several people and some serious engine builders that now the BAM lifters with the DLC pins are even superior to the bushing.

DLC is Diamond-Like-Carbon Laser Coated, I pulled this from the web "What is a Diamond-Like-Carbon (DLC) Coating? DLC coatings offer a unique combination of high hardness and low friction coefficient → 'the hardness of diamond and the lubricity of graphite'.

So now you don't have to worry about needle bearings failing or the bushing getting beat out. My research is showing this are our best option without going exotic. I got these for $1,130 to my door, which is about $300 less than Isky bushed lifters.