For years I've used the E-Z bar for bicep and tricep work. But my question is geared more towards bicep work. Over the years i've heard from many people that straight bar for biceps works the best for adding overall mass. So i would use the straight bar for a awhile, and i must say it was then that my biceps started to benefit the most from it. But it puts hell on the wrists. So i switched back to the E-Z Bar. And for some reason i wasn't feeling the intensity i was feeling when i was using the straight bar. And...my arms we'rnt gaining mass...but just taking more shape.
Which brings me to my question...

Is it possible that the E-Z bars are geared more towards defining the muscle?..rather than adding mass to it? (Now remember, this is geared towards bicep workouts not triceps...reason being that you can add mass to the triceps with the E-Z bar...e.g. close grip bench)

straight bars are heavier and curls are curls..no matter what equipment you use as long as it is curling..it is still curling

who cares,do them both to get complete development....ya heard....