i was just wondering what would be the best action to take in building some good abs!!

a little everyday? or 1 WHOLE day dedicated to abs but once a week?

for example my current routine is

Mon. - Chest, Biceps and some abs
Tues. - Back, Triceps and some abs
Wed. - Delts, Traps and some abs
Thurs. - OFF
Fri. - 2 of every muscle (chest, bi, tri, should, back, abs)
Sat. - OFF
Sun. - OFF

that is what i am currently doing. But how would this workout?

Mon. - Chest and Biceps
Tues. - Back and Triceps
Wed. - Delts and Traps
Thurs. - ABS
Fri. - 2 of every muscle (chest, bi, tri, should, back, abs)
Sat. - OFF
Sun. - OFF

which one would be better?!?!

thanks for your help everyone !!!