I finally installed a 60t Vuelta front chainring with a 20t rear which is 78.8 gear inches. I previously had a 48x16 - 78.8 gear inches before. Used a 1/8" BMX chains on both combos.
My personal evaluation:
1.) The 60tx20t is whisper quiet and I seem to generated more torque, especially on moderate drags. I'm sure it's due to the fact that the larger diameter rear cog of the 20t vs. the 16t is comparable to having longer crankarms-more leverage can be applied to rear hub.
Not to mention the bigass ring looks super-kool. I'm sold on big/big. Super-sized front chainrings 4 ever!