a very loaded question and each individual would probably give you a different answer. i was always big on the aegis systems for escort set ups but out of curiosity i added the retro borg set to my escorts and was so happy with the results i added the retro sets to all 6 of my toons. for me it worked well. for you who knows as so much of your abilities is related to how you set up your skill tree. but even so i found it best just to experiment until you find something which works best for you and your individual play of style. i think it took me almost 2 years to finally be happy with my bop set up and just from shear repetition and testing my other toons came into good set ups. always ask for advice for help but your individual testing should be the final absolution to your final builds.