This thread discusses the differences in breeding between Emerald and Diamond/Pearl. Okay, now one may think "Who cares? You still breed the same, all the mechanics are identical!" But, yes, while the mechanics of breeding remain unchanged, the game around it is changed. I'll list some pros and cons of breeding in Emerald vs. D/P.
Note that I will compare all aspects of breeding, including Dittos, and even EV training.
Emerald.
++++Pros++++
*Access to Emerald Tutor moves
*Easy ability to clone items/pokemon
*Eggs hatch at Level 5 for quicker IV checks
*Master Breeder can check for multiple flawless IVs
*Easy to catch Dittos in the wild
----Cons----
*Cannot breed Sinnoh pokemon (duh)
*EV-training is slower
*Catching Synchronizers is difficult (Safari Zone)
*Certain Egg Moves cannot be bred
Diamond/Pearl.
++++Pros++++
*Easily obtainable Synchronizers
*EV-training is very fast (Power Items)
*Can breed new Egg Moves
*Can breed all pokemon
*Characteristics provide insight into possible flawless IVs
----Cons----
*Eggs hatch at Level 1
*No reliable way to clone (for me, at least, I can't get the GTS glitch down)
*Characteristics only display one perfect IV
Alright, now discuss where you prefer to breed: Hoenn or Sinnoh?
I, myself, am partial to breeding in Emerald because it allows me to clone.
Note that I will compare all aspects of breeding, including Dittos, and even EV training.
Emerald.
++++Pros++++
*Access to Emerald Tutor moves
*Easy ability to clone items/pokemon
*Eggs hatch at Level 5 for quicker IV checks
*Master Breeder can check for multiple flawless IVs
*Easy to catch Dittos in the wild
----Cons----
*Cannot breed Sinnoh pokemon (duh)
*EV-training is slower
*Catching Synchronizers is difficult (Safari Zone)
*Certain Egg Moves cannot be bred
Diamond/Pearl.
++++Pros++++
*Easily obtainable Synchronizers
*EV-training is very fast (Power Items)
*Can breed new Egg Moves
*Can breed all pokemon
*Characteristics provide insight into possible flawless IVs
----Cons----
*Eggs hatch at Level 1
*No reliable way to clone (for me, at least, I can't get the GTS glitch down)
*Characteristics only display one perfect IV
Alright, now discuss where you prefer to breed: Hoenn or Sinnoh?
I, myself, am partial to breeding in Emerald because it allows me to clone.