What are the benefits?

I'm 24 yrs old. 5'9" 185 lbs. with about 15% bf. Bodytype: ectomorph

I am currently on this routine (recommended to be by members of this board):

MON Chest, Calfs
TUE Shoulders, Forearms
WED Triceps, Abs
THUR Legs, Calfs
FRI Back, Forearms
SAT Biceps, Abs
SUN Off

4 exercises per body part, 4 sets per exercise, 10-15 reps (depending on exercise and body part)

I know that many people work out to a routine very similar to this. All my life, especially throughout high school, I would workout like this:

MON Chest, triceps, shoulders
TUE Legs, Back, biceps
WED Rest
THUR (repeat MON)
FRI (repeat TUE)
SAT Rest
SUN Rest

so going from one to the other has been hard for me. I have been on the first routine for about 4 months. The only great gains from it have been from my biceps and triceps and that I have dropped 8lbs of fat. Could it be that I'm overtraining in the sense that I still pretty new to bodybuilding and too many exercises can be confusing to the body, rather that overtraining in the sense that I'm doing to much?

I would like to know what are the benefits of the the second routine and maybe I could come up with a mix of both 1 and 2. I just feel like there is too much time between my work outs of each body part, that it feels more like maintenence, rather that growth.

I guess the second routine is geared primarily for strength? I would like to do a routine like this:

MON Chest, back, calfs
TUE Shoulders, biceps, forearms
WED Legs, triceps, abs
THUR (repeat MON)
FRI (repeat TUE)
SAT (repeat WED)
SUN Rest

3 exercises per body part, 4 sets per exercise, 10-15 reps (depending on body part and exercise)

Does anyone see any benefits to this routine?:scratch: I don't mind working out 6 days a week, and my diet is 50% protein, 40% carbs, and 10% fats.

Any help would be appreciated.

Thanks

DICK