If you want some advice on your split I'd suggest writting out your entire split, down to the exercises, sets, and number of reps.
Your first split looks better than your second one. I just don't advocate working chest and back on the same day. Give us some more info though.
This is the split I'm doing right now. If you want some extra info, just ask.
Day 1 - Chest
Day 2 - Back/Biceps
Day 3- Off
Day 4 - Legs
Day 5 - Shoulders/Triceps
Day 6- Off
Day 7 - Off
Works good for me. I center my workouts around four core lifts: squats, deadlifts, military presses, and bench presses. If my diet is in check then I see strength and size gains with this routine, or variations thereof.
But for the record, diet makes up about 80% of your progress. A lot of people train well enough to see progress if only their diet was in check. How some people will constantly look for new workout routines to "shock their muscles" when they haven't seen any real progress since they first started lifting.